Viktor Dukhovni <postfix-us...@dukhovni.org> wrote:
> On Wed, Apr 20, 2022 at 08:26:16PM -0400, Viktor Dukhovni wrote:

>>> this is postfix 3.8-20220325 (FreeBSD port postfix-current) on FreeBSD 
>>> 13.1-STABLE.
>> 
>> You could install the "postfix" rather than "postfix-current" port.
>> I have:
>> 
>>    -rw-r--r--  1 root  wheel  13544 Mar 17 17:23 
>> /usr/ports/mail/postfix/Makefile
>>    -rw-r--r--  1 root  wheel  13809 Mar 17 17:23 
>> /usr/ports/mail/postfix-current/Makefile
> 
> Which are:
> 
>    /usr/ports/mail/postfix-current/Makefile:DISTVERSION=   3.8-20220325
>    /usr/ports/mail/postfix/Makefile:DISTVERSION=   3.7.0

I had had 3.7.0 running until recently and upgraded to 3.8-20220325 because of 
those 'signal 11' messages.

I did some investigation of my log files with the result that the first 'signal 
11' messages were reported the day after I upgraded from 3.6.3 to 3.7.0:

2022-03-17 changes in jail mail:

        -openssl-1.1.1m_2,1             TLSv1.3 capable SSL and crypto library
        +openssl-1.1.1n,1               TLSv1.3 capable SSL and crypto library
        +pcre2-10.39                    Perl Compatible Regular Expressions 
library, version 2
        -postfix-3.6.3,1                Secure alternative to widely-used 
Sendmail
        +postfix-3.7.0_1,1              Secure alternative to widely-used 
Sendmail

2022-03-18 first entry:
        process /usr/local/libexec/postfix/postscreen pid xxxxx killed by 
signal 11


FYI: Both service jails of mine running postfix are of identical setup, but run 
on different cloud instances at different locations. These postfix instances 
are dealing with very low traffic, namely 40-1000 connects each day. Both 
instances started throwing 'signal 11' messages the day after my upgrades from 
3.6 to 3.7/3.8.


HTH and regards,
Michael

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