Bug: cyrus-sasl fills systemd journal with SQL debug messages

Hello,

I'm in the process of migrating a postfix + cyrus-sasl auth installation from Ubuntu 12.04 to CentOS 7 and noticed that my system journal gets flooded with auth.debug syslog messages generated by the auxprop sql module.

Such as:

Oct 05 11:55:01 mail postfix/smtpd[5883]: sql auxprop plugin using mysql engine
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin Parse the username sasl-user
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin try and connect to a host
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin trying to open db 'postfix' on host '127.0.0.1:3306'
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin create statement from userPassword sasl-user mail.domain
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin doing query SELECT passwd FROM saslout WHERE uname='sasl-user' AND aktiv='Y';
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin Parse the username sasl-user
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin try and connect to a host
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin trying to open db 'postfix' on host '127.0.0.1:3306'
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin Parse the username sasl-user
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin try and connect to a host
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin trying to open db 'postfix' on host '127.0.0.1:3306'
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin create statement from userPassword sasl-user mail.domain
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin doing query SELECT passwd FROM saslout WHERE uname='sasl-user' AND aktiv='Y';
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin create statement from cmusaslsecretPLAIN sasl-user mail.domain
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin doing query SELECT passwd FROM saslout WHERE uname='sasl-user' AND aktiv='Y';
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin Parse the username sasl-user
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin try and connect to a host
Oct 05 11:55:01 mail postfix/smtpd[5883]: sql plugin trying to open db 'postfix' on host '127.0.0.1:3306'

I've taken the issue to the postfix-users list at first [1] and in the meantime also found hints on this cyrus-sasl list and Viktor Dukhovni eventually confirmed that the postfix callback is indeed ignored because the log() calls do not include the connection handle, see:

http://marc.info/?l=postfix-users&m=144408276316379&w=2

And proposed path by Viktor Dukhovni (for the SQL module only)
http://marc.info/?l=postfix-users&m=144408506116930&w=2

I take this to mean that using cyrus-sasl with SQL backend will create a LOT of noise on every distribution that utilizes systemd and its journal?

[1] http://marc.info/?l=postfix-users&m=144404104202153&w=2

--
Patrick Wagner