I have installed RHEL 9.4, which is the latest version of RHEL available. The IT department found multiple vulnerabilities in the installed Apache software 2.4.57. From the official website, the latest version of Apache available for RHEL 9.4 is version 2.4.57.
How can I install a later version (e.g. >2.4.62) to fix the vulnerabilities? or what should I do if I cannot install a newer version?
I have set up an OpenLDAP server via slapd in macOS 10.15.7. I successfully connected to the server in Apache Directory Studio LDAP Browser. However, when I try to add any new entry to the server, the same error exists:
[LDAP result code 53 - unwillingToPerform] no global superior knowledge
Here is a screenshot when I am trying to create an OU:
It said the Parent does not exist. When I leave Parent empty, it said "no global superior knowledge". So what should I do if I want to set up the LDAP server with new OU, O and CN?
I installed Apache Directory Studio version 2.0.0-M17 via this official download link. I launched the software from Launchpad and created a new LDAP server.
However, when I try to start the server, the status changes quickly from Starting to Stopped, and no logs are displayed. How can I debug the problem?
I tried to modify the ApacheDirectoryStudio.ini and uncommented the following lines to config the heap memory:
-Xms1g
-Xmx2g
I relaunched the Eclipse-based studio software, but the situation is the same.
Here are the apacheds.log:
[17:34:12] INFO [org.apache.directory.server.UberjarMain] - Starting the service.
[17:34:14] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.3.6.1.4.1.42.2.27.8.5.1' already exists in the attribute (supportedControl)
[17:34:14] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.841' already exists in the attribute (supportedControl)
[17:34:14] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.3.6.1.4.1.4203.1.9.1.2' already exists in the attribute (supportedControl)
[17:34:14] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.319' already exists in the attribute (supportedControl)
[17:34:14] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.528' already exists in the attribute (supportedControl)
[17:34:14] WARN [org.apache.directory.server.core.DefaultDirectoryService] - You didn't change the admin password of directory service instance 'default'. Please update the admin password as soon as possible to prevent a possible security breach.
[09:32:44] INFO [org.apache.directory.server.UberjarMain] - Starting the service.
[09:32:46] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.3.6.1.4.1.42.2.27.8.5.1' already exists in the attribute (supportedControl)
[09:32:46] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.841' already exists in the attribute (supportedControl)
[09:32:46] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.3.6.1.4.1.4203.1.9.1.2' already exists in the attribute (supportedControl)
[09:32:46] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.319' already exists in the attribute (supportedControl)
[09:32:46] WARN [org.apache.directory.api.ldap.model.entry.DefaultAttribute] - ERR_13207_VALUE_ALREADY_EXISTS The value '1.2.840.113556.1.4.528' already exists in the attribute (supportedControl)
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.api.ldap.model.entry.Value] - MSG_13202_AT_IS_NULL ()
[09:32:47] WARN [org.apache.directory.server.core.DefaultDirectoryService] - You didn't change the admin password of directory service instance 'default'. Please update the admin password as soon as possible to prevent a possible security breach.
Operating System: macOS 10.15.7
I setup Postfix + Dovecot (with IMAP) for my Ubuntu 16.04 email server. I sent an email from Gmail to my domain, I can see the postfix log "reacts" with the incoming email, but the incoming email does not appear in the Mailbox.
Here are the related part of the logs:
Mar 30 02:15:17 yourappapp-vm postfix/smtp[27680]: Untrusted TLS connection established to gmail-smtp-in.l.google.com[74.125.24.27]:25: TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)
Mar 30 02:15:18 yourappapp-vm postfix/smtp[27680]: C5EBB1BCB3B: to=<[email protected]>, orig_to=<[email protected]>, relay=gmail-smtp-in.l.google.com[74.125.24.27]:25, delay=1.3, delays=0/0.01/0.7/0.63, dsn=2.0.0, status=sent (250 2.0.0 OK 1617070518 y128si20297886pfb.155 - gsmtp)
Mar 30 02:15:18 yourappapp-vm postfix/qmgr[27605]: C5EBB1BCB3B: removed
Looks like it is an outgoing email, but I didn't send anything at that time. I only received this when I send an email from Gmail. How can I further debug?
p.s. for the untrusted TLS issue, I fixed it by adding CApath to Postfix config. Still no email in mailbox.
in my ~/Maildir/ sub-folders, all are empty.
p.s. the mail server can send out emails, therefore the SMTP part is fine.
More debugging info below:
Network Ports
Postfix is listening to 25, 587 and 465
$ ss -lnpt | grep master
LISTEN 0 100 *:25 *:* users:(("master",pid=27603,fd=12))
LISTEN 0 100 *:587 *:* users:(("master",pid=27603,fd=16))
LISTEN 0 100 *:465 *:* users:(("master",pid=27603,fd=19))
Dovecot is listening to 143 and 993
$ ss -lnpt | grep dovecot
LISTEN 0 100 *:993 *:* users:(("dovecot",pid=27649,fd=36))
LISTEN 0 100 *:143 *:* users:(("dovecot",pid=27649,fd=35))
main.cf
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
#smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
#smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
#Enable TLS Encryption when Postfix receives incoming emails
smtpd_tls_cert_file=/etc/letsencrypt/live/mail.yourappapp.com/fullchain.pem
smtpd_tls_key_file=/etc/letsencrypt/live/mail.yourappapp.com/privkey.pem
smtpd_tls_security_level=may
smtpd_tls_loglevel = 1
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
#Enable TLS Encryption when Postfix sends outgoing emails
smtp_tls_security_level = may
smtp_tls_loglevel = 1
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
#Enforce TLSv1.3 or TLSv1.2
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtp_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtp_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_CApath = /etc/ssl/certs
smtpd_tls_CApath = /etc/ssl/certs
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.yourappapp.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = yourappapp.com, $myhostname, localhost.$mydomain, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
home_mailbox = Maildir/
# LMTP
mailbox_transport = lmtp:unix:private/dovecot-lmtp
smtputf8_enable = no
mydomain = yourappapp.com
master.cf
#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - y - - smtpd
#smtp inet n - y - 1 postscreen
#smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
submission inet n - y - - smtpd
-o syslog_name=postfix/submission
-o smtpd_tls_security_level=encrypt
-o smtpd_tls_wrappermode=no
-o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
-o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o smtpd_sasl_type=dovecot
-o smtpd_sasl_path=private/auth
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - y - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
-o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o smtpd_sasl_type=dovecot
-o smtpd_sasl_path=private/auth
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - y - - qmqpd
pickup unix n - y 60 1 pickup
cleanup unix n - y - 0 cleanup
qmgr unix n - n 300 1 qmgr
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - y 1000? 1 tlsmgr
rewrite unix - - y - - trivial-rewrite
bounce unix - - y - 0 bounce
defer unix - - y - 0 bounce
trace unix - - y - 0 bounce
verify unix - - y - 1 verify
flush unix n - y 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - y - - smtp
relay unix - - y - - smtp
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - y - - showq
error unix - - y - - error
retry unix - - y - - error
discard unix - - y - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - y - - lmtp
anvil unix - - y - 1 anvil
scache unix - - y - 1 scache
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
SMTP session looks fine as well:
220 mail.yourappapp.com ESMTP Postfix (Ubuntu)
250 mail.yourappapp.com
EHLO test.network-tools.com
250-mail.yourappapp.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
VRFY info
252 2.0.0 info
RSET
250 2.0.0 Ok
EXPN info
502 5.5.2 Error: command not recognized
RSET
250 2.0.0 Ok
MAIL FROM:<[email protected]>
250 2.1.0 Ok
RCPT TO:<[email protected]>
250 2.1.5 Ok
RSET
250 2.0.0 Ok
QUIT
Added debug information based on the answer:
Telnet session log
$ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.yourappapp.com ESMTP Postfix (Ubuntu)
HELO localhost
250 mail.yourappapp.com
MAIL FROM: <[email protected]>
250 2.1.0 Ok
RCPT TO: <[email protected]>
250 2.1.5 Ok
DATA
354 End data with <CR><LF>.<CR><LF>
From: <[email protected]>
To: <[email protected]>
Subject: Test from Telnet
This is a test
.
250 2.0.0 Ok: queued as BB9021B9B62
QUIT
221 2.0.0 Bye
Connection closed by foreign host.
Related Mail Log
Mar 31 01:43:27 yourappapp-vm postfix/smtpd[8491]: connect from localhost[127.0.0.1]
Mar 31 01:43:54 yourappapp-vm postfix/smtpd[8491]: BB9021B9B62: client=localhost[127.0.0.1]
Mar 31 01:44:31 yourappapp-vm postfix/cleanup[8494]: BB9021B9B62: message-id=<[email protected]>
Mar 31 01:44:31 yourappapp-vm postfix/qmgr[32352]: BB9021B9B62: from=<[email protected]>, size=391, nrcpt=1 (queue active)
Mar 31 01:44:31 yourappapp-vm postfix/cleanup[8494]: 9636F1B9B63: message-id=<[email protected]>
Mar 31 01:44:31 yourappapp-vm postfix/qmgr[32352]: 9636F1B9B63: from=<[email protected]>, size=526, nrcpt=1 (queue active)
Mar 31 01:44:31 yourappapp-vm postfix/local[8498]: BB9021B9B62: to=<[email protected]>, relay=local, delay=45, delays=45/0/0/0, dsn=2.0.0, status=sent (forwarded as 9636F1B9B63)
Mar 31 01:44:31 yourappapp-vm postfix/qmgr[32352]: BB9021B9B62: removed
Mar 31 01:44:32 yourappapp-vm postfix/smtp[8499]: Trusted TLS connection established to gmail-smtp-in.l.google.com[172.217.194.27]:25: TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)
Mar 31 01:44:33 yourappapp-vm postfix/smtp[8499]: 9636F1B9B63: to=<[email protected]>, orig_to=<[email protected]>, relay=gmail-smtp-in.l.google.com[172.217.194.27]:25, delay=1.4, delays=0/0.01/0.69/0.71, dsn=2.0.0, status=sent (250 2.0.0 OK 1617155072 u21si587511pfl.125 - gsmtp)
Mar 31 01:44:33 yourappapp-vm postfix/qmgr[32352]: 9636F1B9B63: removed
Mar 31 01:44:35 yourappapp-vm postfix/smtpd[8491]: disconnect from localhost[127.0.0.1] helo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Both logs look NORMAL, but no email has been received in the mailbox.
I would like to set the hostname of my Ubuntu 16.04 to a FQDN, as I plan to install Postfix server. However I have multiple domains hosted in the web server via Apache2 virtual hosts. For example:
My question is, how should I set the hostname? Use either one of the domains? or I can use an unrelated/non-existent name for the hostname?
I have a website (https://hypermotions.com) which shows directory listing in some browsers only (such as iOS Chrome App), but most desktop & mobile browsers are able to display the website correctly.
What makes the Apache server having such behavior? The website is built using https://imcreator.com, but sure if it's related (thus I have no control on the files, such as .htaccess).
I have a postfix SMTP server on Ubuntu. I have valid SPF and DKIM records, as verified by the email header my customer received.
Authentication-Results: spf=pass (sender IP is XXX.XXX.XXX.XXX) smtp.mailfrom=mydomain.com; hotmail.com; dkim=pass (signature was verified) header.d=mydomain.com;hotmail.com; dmarc=bestguesspass action=none header.from=mydomain.com;
However, the email falls into junk only in Outlook / Live.com / hotmail. The Spam Confidence Level (SCL) is 5 (spam).
X-MS-Exchange-Organization-SCL: 5
X-MS-Exchange-Organization-PCL: 2
The FAQ of SCL asks me to join 3rd party ReturnPath Certification Program to verify each email sent, but the certification program is very expensive.
Is there any alternatives to lower the SCL score? Does adding DMARC record help?
Update:
This question is not about generic spam filter-fighting strategy; it's about Microsoft's Spam Confidence Level (SCL).
I installed Dovecot 2.2.10 & Roundcube in Amazon Linux (apparently it's a CentOS variant).
If I want to add a new mailbox (e.g. [email protected]) to IMAP, how do I add this mailbox? I read from Dovecot documentation, there are quite a lot different ways to do so, e.g. static userdb/ dynamic userdb/ add user via PAM, etc. Which method should I pick?
note: this user does not require to login to Linux; it's authorized to access mailbox via IMAP or Roundcube webmail.
Planning to host a PHP website with MySQL DB in Amazon Web Services, which AWS components should I choose? The website is just a dynamic website with a custom CMS, though a large amount of data are expected to be uploaded to the CMS.
I'm thinking to use Amazon EC2, with the following settings:
But I heard from others that I can use Amazon S3 to host websites, with the following settings:
What are the differences? Which should I choose?
I enabled the Apache Status page by mod_status module. The process list is very long, and most of them are OPTIONS * HTTP/1.0, which I want to filter away.
Is there any tweak, option or flag to hide those OPTIONS processes?
I installed a SMTP server with Postfix as mail agent (on Ubuntu 12.04). Config is as follow:
$ postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
inet_protocols = all
mailbox_size_limit = 0
milter_default_action = accept
milter_protocol = 2
mydestination = mail.example.com, example.com, example, localhost.localdomain, localhost
myhostname = mail.example.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 203.80.250.0/26 192.168.200.0/24 218.213.78.192/26 59.148.211.162/32 10.0.0.0/8
myorigin = /etc/mailname
non_smtpd_milters = inet:localhost:12301
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_milters = inet:localhost:12301
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
However, weird thing happens when I try to use this SMTP on my Mac, which is in a different network than my server.
When I use Mac OS X (10.10.3)'s Mail App, it said the SMTP cannot be connected. Settings are as follow:
However, I use telnet in Terminal, it works:
$telnet mail.example.com 25
Trying 123.123.123.123...
Connected to mail.example.com.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix (Ubuntu)
HELO example.com
250 mail.example.com
MAIL FROM: [email protected]
250 2.1.0 Ok
RCPT TO: [email protected]
250 2.1.5 Ok
DATA
Testing
.
250 2.0.0 Ok: queued as E44CC240959
QUIT
221 2.0.0 Bye
The response looks fine to me. What Postfix settings did I miss?
p.s.
UPDATE The exact error message in Mail App's Mail Connection Doctor is:
Could not connect to this SMTP server. Check your network connection and that you entered the correct information in the Account preferences.
--
UPDATE And I enabled the logging of Mail App, which brings me this useful log (containing error messages):
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 220 (41 additional bytes)
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: Connected: <MFSMTPConnection: 0x7fc3dc4edae0> (Connected) account: A{SMTP - 89AD1B73-5242-45DF-99C3-10B294A5D489}
hostname: mail.example.com, port: 25, security layer: kCFStreamSocketSecurityLevelNone
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] >> EHLO (16 additional bytes)
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-mail.example.com
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-PIPELINING
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-SIZE 10240000
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-VRFY
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-ETRN
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-STARTTLS
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-ENHANCEDSTATUSCODES
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250-8BITMIME
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 250 DSN
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] >> STARTTLS (0 additional bytes)
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: [0x7fc3dc4edae0] << 220 2.0.0 (18 additional bytes)
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: Could not connect: <MFSMTPConnection: 0x7fc3dc4edae0> (Disconnected) account: A{SMTP - 89AD1B73-5242-45DF-99C3-10B294A5D489} (Error Domain=NSPOSIXErrorDomain Code=61 "The operation couldn’t be completed. Connection refused")
Jun 10 20:23:54 RaptoriMac.local Mail[413] <Debug>: Could not connect: <MFSMTPConnection: 0x7fc3dc4edae0> (Disconnected) account: A{SMTP - 89AD1B73-5242-45DF-99C3-10B294A5D489} (Error Domain=NSPOSIXErrorDomain Code=61 "The operation couldn’t be completed. Connection refused")
The error message is on the last line right after STARTTLS command:
Could not connect: (Disconnected) account: A{SMTP - 89AD1B73-5242-45DF-99C3-10B294A5D489} (Error Domain=NSPOSIXErrorDomain Code=61 "The operation couldn’t be completed. Connection refused")
How do I solve it? I already marked allow using insecure connection, but it still attempts to start TLS connection. I think it attempts to connect at port 465, which is blocked by firewall. Am I correct?
Does Heroku supports MySQL (esp. InnoDB database engine) ?
I see there is ClearDB add-on, but it didn't state it supports InnoDB or not.
Is there any way to install Ubuntu's truncate command to Mac OS X 10.7 in order to use the command in Terminal shell?
How to measure MySQL replication delay between 2 MySQL servers ( 1 Master 1 Slave ) ?
Given that two Xeon E5620 grade 1U servers are separate machine in same network segment, using MySQL Community Server 5.1 running in Ubuntu Linux Server 11.04.
For the following hardware specification, how can I estimate the maximum concurrent connection of MySQL server?
My company planning to install a new Exchange 2010 in the domain.
I got a dual Xeon 5520 DELL R710 2U server running Windows Server 2008 R2. The Exchange server has to serve around 200 users, with around 1000 emails in & out per hour. Should I install Exchange 2010 in physical server or setup a Hyper-V VM for the Exchange server?
The scenario is:
I got 2 identical 2U rack mount servers with Operating System Windows Server 2008 R2 Enterprise. They are :
If I want to enable failover clustering for both Exchange 2010, ensure zero downtime. What are the steps? Thanks for advice.
How to configure Windows Server 2008 R2 Datacenter to join a domain which is created by its child Virtual Machine ( which is the Domain Controller, given that the Virtual Machine starts at the startup of the R2 Datacenter ) ?
I have 6 x 1TB SAS for my new server. I want to create 3 partitions: one for OS, one for Virtual Machines, one for share data. There are 2 options for me:
Option A: Create 3 Virtual Disks in RAID Configuration Utility
Option B: Create 3 Partitions during OS Installation
Given that the disks will run in RAID6, which option is better?
Other than the two supported Linux distributions (RHEL & SUSE Enterprise), is there any FREE alternatives suitable for Windows Server 2008 R2 + Hyper-V environment, which has the following purposes?
Also, I would like to ask, if Microsoft said not supporting Linux distributions other than RHEL & SUSE Enterprise, will other Linux distributions like Ubuntu Server edition and Debian be supported in later stage? Does anyone know what is the reason behind not supporting other Linux distributions (solely business consideration?) ?