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Igor's questions

Martin Hope
Igor
Asked: 2014-12-06 02:07:43 +0800 CST
  • 0

We've been struggling to create the consistent scheme for backup of KVM virtual machines under Proxmox control and Ceph as storage, but still quite often during the vzdump with a snapshot the virtual machine is going down

120: dic 05 04:51:47 INFO: status: 17% (21731147776/127775277056), sparse 0% (1095598080), duration 1225, 17/16 MB/s
120: dic 05 04:52:47 ERROR: VM 120 not running
120: dic 05 04:52:47 INFO: aborting backup job
120: dic 05 04:52:47 ERROR: VM 120 not running
120: dic 05 04:52:48 ERROR: Backup of VM 120 failed - VM 120 not running

Vzdump config

vzdump 120 --quiet 1 --mode snapshot --mailto <email> --node node1 --compress lzo --maxfiles 2 --storage backup01

Some of our customer proposed us the following strategy of the backup from the inside of the virtual machine, saying "it is that simple!"

   mount /nfs/backup
   dd if=/dev/sda of=/​nfs/backup/$datetime-$virtualmachine

​ What would be your opinion on this proposal? How to explain in a simple and profound terms that this is a really bad idea? And how to remain calm and polite in this situation:?

Thank you!

backup
Martin Hope
Igor
Asked: 2011-09-15 04:13:24 +0800 CST
  • 8

we've inherited the DNS from another ISP and now our mail server is bombed by about 1000 emails per minute, 99.99% of these emails are just spam. We're trying to optimize the filtering/rejecting the spam with no much luck.

What would be on your opinion the optimal set for smtpd_recipient_restrictions?

The system config: Ubuntu + Amavis + Postfix + MySQL + Fail2Ban-Postfix

Any advise is welcome!

UDPATE, 2012-08-08

On alteration of the posftix configuration as folows and configuring the Potrgey service the spam level decayed 10 times

smtpd_recipient_restrictions = 
permit_mynetworks, 
permit_sasl_authenticated, 
reject_non_fqdn_hostname, 
reject_invalid_hostname, 
reject_non_fqdn_sender, 
reject_unknown_sender_domain, 
reject_non_fqdn_recipient, 
reject_unknown_recipient_domain, 
check_policy_service inet:127.0.0.1:10023, 
reject_rbl_client zen.spamhaus.org, 
check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf,
reject_unauth_pipelining, 
reject_unauth_destination

enter image description here

ubuntu spam postfix spam-filter amavis
Martin Hope
Igor
Asked: 2010-10-16 03:59:10 +0800 CST
  • 0

Hello we're inherited one server based on Gentoo + Postfix + Amavis-new + Maildrop

$ cat /etc/gentoo-release 
Gentoo Base System release 1.12.9
$ equery list
mail-mta/postfix-2.5.5
mail-filter/maildrop-2.0.4
mail-filter/amavisd-new-2.5.2

Some config files for postfix+amavis: http://dl.dropbox.com/u/9430338/config.tar.gz

Log snipets:

/var/log/mail.log: 

Oct 15 13:36:29 myhost postgrey: action=pass, reason=triplet found, client_name=mail-yw0-f48.google.com, client_address=209.85.213.48, [email protected], [email protected]
Oct 15 13:36:33 myhost postfix/smtp[3535]: 9D576478A5B: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=3.8, delays=0.68/0/0.01/3.1, dsn=2.7.0, status=sent (250 2.7.0 Ok, discarded, id=04288-01 - SPAM)

/var/log/amavis.log:

Oct 15 13:44:47 myhost.it /usr/sbin/amavisd[4288]: (04288-05) ESMTP::10024 /var/amavis/tmp/amavis-20101015T133629-04288: <[email protected]> -> <[email protected]> SIZE=2595 Received: from myhost.it ([127.0.0.1]) by localhost (myhost.it [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for <[email protected]>; Fri, 15 Oct 2010 13:44:47 +0200 (CEST)
Oct 15 13:44:47 myhost.it /usr/sbin/amavisd[4288]: (04288-05) Checking: I9aGeuG0kC1N [209.85.213.176] <[email protected]> -> <[email protected]>
Oct 15 13:44:49 myhost.it /usr/sbin/amavisd[4288]: (04288-05) SPAM, <[email protected]> -> <[email protected]>, Yes, score=1006.929 tag=x tag2=5 kill=10 tests=[AWL=0.390, BAYES_50=0.001, DNS_FROM_OPENWHOIS=1.13, FH_DATE_PAST_20XX=3.188, GTUBE=1000, HTML_MESSAGE=0.001, TVD_SPACE_RATIO=2.219], autolearn=no
Oct 15 13:44:49 myhost.it /usr/sbin/amavisd[4288]: (04288-05) Blocked SPAM, [209.85.213.176] [209.85.213.176] <[email protected]> -> <[email protected]>, Message-ID: <[email protected]>, mail_id: I9aGeuG0kC1N, Hits: 1006.929, size: 2595, 2006 ms

PROBLEM.

The problem is that in current configuration the mail system drop all spam message.

Desired behaviour.

We would like to receive all messages in the IMAP folder .Junk with ***SPAM*** message prepended to the subject.

Thank for your time!

email spam postfix amavis