i would like to block IP address with fail2ban if in postfix mail log is line:
SSL_accept error from unknown[xxx.xxx.xxx.xxx]: lost connection
i try make fail2ban ssl_error.conf in filter.d with this line:
failregex = ^%(__prefix_line)sSSL_accept error from \S+\s*\[<HOST>\]: lost connection$
but no luck :(
I start build my first cloud server: Ubuntu 16.04 with postfix.
Question is how can i configure postfix to use TLSv1.2 when i send mail from my webshop?
When my webshop sending mail to my postfix server it uses TLSv1 Here is log:
postfix/submission/smtpd[19111]: Anonymous TLS connection established from domainname.com[xxx.xxx.xxx.xxx]: TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)
in my webshop i set in config: use: TLS port: 587
Thanks J
My server info:
Ubuntu 16.04
postfix:
Installed: 3.1.0-3
openssl:
Installed: 1.0.2h-1+deb.sury.org~xenial+1
Here is log from postfix: can see mail come in with TLSv1 ... :(
Sep 19 19:10:56 ubuntu postfix/master[6992]: daemon started -- version 3.1.0, configuration /etc/postfix
Sep 19 19:11:04 ubuntu postfix/submission/smtpd[7126]: connect from domainname.com[xxx.xxx.xxx.xxx]
Sep 19 19:11:04 ubuntu postfix/submission/smtpd[7126]: Anonymous TLS connection established from domainname.com[xxx.xxx.xxx.xxx]: TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)
Sep 19 19:11:04 ubuntu postfix/submission/smtpd[7126]: 803AB41C0A: client=domainname.com[xxx.xxx.xxx.xxx], sasl_method=LOGIN, sasl_username=raitis
Sep 19 19:11:04 ubuntu postfix/cleanup[7131]: 803AB41C0A: message-id=<[email protected]>
Sep 19 19:11:04 ubuntu postfix/qmgr[7010]: 803AB41C0A: from=<[email protected]>, size=694, nrcpt=1 (queue active)
Sep 19 19:11:04 ubuntu postfix/submission/smtpd[7126]: disconnect from domainname.com[xxx.xxx.xxx.xxx] ehlo=2 starttls=1 auth=1 mail=1 rcpt=1 data=1 quit=1 commands=8
Sep 19 19:11:04 ubuntu postfix/smtp[7133]: Trusted TLS connection established to gmail-smtp-in.l.google.com[66.102.1.26]:25: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Sep 19 19:11:04 ubuntu postfix/smtp[7133]: 803AB41C0A: to=<[email protected]>, relay=gmail-smtp-in.l.google.com[66.102.1.26]:25, delay=0.43, delays=0.06/0.04/0.2/0.14, dsn=2.0.0, status=sent (250 2.0.0 OK 1474305064 14si1756669wmn.119 - gsmtp)
Sep 19 19:11:04 ubuntu postfix/qmgr[7010]: 803AB41C0A: removed
master.cf
smtp inet n - - - - smtpd
smtpd pass n - - - - smtpd
submission inet n - - - - smtpd
-o syslog_name=postfix/submission
-o smtpd_tls_security_level=may
-o smtpd_sasl_auth_enable=yes
-o smtpd_sasl_security_options=noanonymous
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o milter_macro_daemon_name=ORIGINATING
-o smtp_tls_mandatory_protocols=TLSv1
#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}