Hello everyone,

I have a Dovecot running and can often observe that the auth process goes wrong if a reload occurs at the moment of authentication.

I have installed dovecot 2.3.21.1 on ubuntu 20. Whether the error also occurs under other versions, I cannot say at the moment.

I have included three examples from the mail log:

## start logs ## # 1 # Nov 27 11:28:18 <myServer> dovecot[946292]: auth: Debug: sql(<myUser>,<myIP>,<I1eibOInIOW5zIKi>): Finished passdb lookup Nov 27 11:28:18 <myServer> dovecot[946292]: auth: Debug: auth(<myUser>,<myIP>,<I1eibOInIOW5zIKi>): Auth request finished Nov 27 11:30:49 <myServer> dovecot[946292]: auth: Error: plain(<myUser>,<myIP>,<I1eibOInIOW5zIKi>): Request 946296.13397 timed out after 151 secs, state=3

Nov 27 11:28:18 <myServer> systemd[1]: Reloading Dovecot IMAP/POP3 email server.

# 2 # Nov 27 09:05:08 <myServer> dovecot[2940195]: auth: Debug: auth(<myUser><myIP>,<nK2cbOAnaMGiIdFS>): Auth request finished Nov 27 09:07:38 <myServer> dovecot[2940195]: auth: Error: plain(<myUser>,<myIP>,<nK2cbOAnaMGiIdFS>): Request 2940206.363 timed out after 150 secs, state=3

Nov 27 09:05:07 <myServer> systemd[1]: Reloading Dovecot IMAP/POP3 email server.

# 3 # Nov 27 10:02:18 <myServer> dovecot[3736041]: auth: Debug: auth(<myUser><myIP>,<1v4HOeEnWtG5zIKi>): Auth request finished Nov 27 10:04:48 <myServer> dovecot[3736041]: auth: Error: plain(<myUser>,<myIP>,<1v4HOeEnWtG5zIKi>): Request 3736048.4962 timed out after 150 secs, state=3

Nov 27 10:02:18 <myServer> systemd[1]: Reloading Dovecot IMAP/POP3 email server. ## end logs ##

You can clearly see that the sql query works, but then the auth-worker seems to hang. I suspect that the auth-worker sends the request to the DB, receives the response and is then killed before it can log in the user via imap.

This then leads to some users not being able to log in for a long time. I write many configs on the server automatically, then I always run a reload so that the changed config is accepted.

Is this a bug or do I have to change something in my setup?

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