Spam Assassin not working properly

Created:

2016-11-16 12:43:38 UTC

Modified:

2017-04-24 11:22:22 UTC

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Spam Assassin not working properly

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

Spam messages are delivered to mailboxes sometimes while anti-spam protection is enabled.The following error can be found in the maillog :

 Feb 25 14:50:54 server spamd[846]: prefork: server reached --max-children setting, consider raising it
Feb 25 15:04:50 server spamd[846]: prefork: server reached --max-children setting, consider raising it
Feb 25 15:04:50 server spamd[846]: prefork: server reached --max-children setting, consider raising it
Feb 25 15:40:22 server spamd[846]: prefork: server reached --max-children setting, consider raising it

Cause

Software issue #PPPM-4155 . It is fixed in Plesk Onyx.

Resolution

Upgrade to the latest Plesk version .

If upgrade is not possible:

  1. Update Plesk database and increase spamfilter_max_children value:

    # plesk db
    MariaDB [psa]> select * from ServiceNodeConfiguration where name='spamfilter_max_children';
    +---------------+------------+-------------------------+-------+
    | serviceNodeId | section | name | value |
    +---------------+------------+-------------------------+-------+
    | 1 | mailServer | spamfilter_max_children | 10 |
    +---------------+------------+-------------------------+-------+
  2. Edit spamassassin configuration file and increase value of --max-children parameter:

    # vi /etc/sysconfig/spamassassin
    --max-children=10
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