Dear Maintainer,
to drop messages of the form:

Oct 15 21:01:22 dds cyrus/cyr_expire[26497]: DIGEST-MD5 common mech free

I added a line (#13) to ignore.d.server/cyrus-imapd:

^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cyrus/[a-zA-Z0-9_]+\[[0-9]+\]:
DIGEST-MD5 common mech free$

Best,
Sebastian

It's a shame no-one replied to this bug from 2012 - more than 10 years
later, is this rule still needed, and is there still interest in
adding it to logcheck?

i wonder if this message is  produced any more, given it refers to MD5
(and why do people add such unintelligible log messages to their
code?)
we'd need an updated ruleset to add it to logcheck