Ah. Thanks for the pointer. ---Aki TuomiDovecot oy -------- Original message --------From: Michael Marley <michael@michaelmarley.com> Date: 31/08/2018 21:17 (GMT+02:00) To: dovecot@dovecot.org Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid Argument

I think this might be caused by glibc 2.28.  I saw a similar error with the "doveadm purge" command after upgrading my system to that version. Michael Marley On 2018-08-31 13:10, Aki Tuomi wrote:

I'll see if this is reproducible

Aki Tuomi Dovecot oy

-------- Original message -------- From: Reuben Farrelly <reuben-dovecot@reub.net> Date: 31/08/2018 17:41 (GMT+02:00) To: Aki Tuomi <aki.tuomi@dovecot.fi>, Dovecot Mailing List <dovecot@dovecot.org> Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid Argument Sure: https://www.reub.net/files/dovecot/lightning-dovecot.conf https://www.reub.net/files/dovecot/thunderstorm-dovecot.conf Updated nightly. Reuben On 1/09/2018 12:26 am, Aki Tuomi wrote: > Can you provide doveconf -n? > > > > --- > Aki Tuomi > Dovecot oy > > -------- Original message -------- > From: Reuben Farrelly <reuben-dovecot@reub.net> > Date: 31/08/2018 17:12 (GMT+02:00) > To: Aki Tuomi <aki.tuomi@dovecot.fi>, Dovecot Mailing List > <dovecot@dovecot.org> > Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid > Argument > > No.  Neither of those are installed on either system. > > Reuben > > On 1/09/2018 12:09 am, Aki Tuomi wrote: >  > Could apparmor or selinux be causing this! >  > >  > >  > >  > --- >  > Aki Tuomi >  > Dovecot oy >  > >  > -------- Original message -------- >  > From: Reuben Farrelly <reuben-dovecot@reub.net> >  > Date: 31/08/2018 16:50 (GMT+02:00) >  > To: Dovecot Mailing List <dovecot@dovecot.org> >  > Subject: Dovecot User Listing Error - getpwent() failed: Invalid Argument >  > >  > Hi, >  > >  > I'm running dovecot-2.3 git and seeing on 2 of my Dovecot installations, >  > the following message logged quite frequently: >  > >  > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: auth-worker(7707): >  > Error: getpwent() failed: Invalid argument >  > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator: Error: >  > User listing returned failure >  > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator: Error: >  > listing users failed, can't replicate existing data >  > >  > It appears that this could be having an effect on replication, but it's >  > unclear because the secondary/replica doesn't see much traffic. >  > >  > Authentication is via PAM and the system is Gentoo Linux x86_64. passb >  > driver = pam, userdb driver = static . >  > >  > doveadm user -u '*' shows the system users listed twice like this (is >  > this a problem?) and then prints: >  > >  > ---- >  > reuben >  > liam >  > reuben >  > liam >  > <some other users> >  > Error: User listing returned failure >  > Fatal: user listing failed >  > ---- >  > >  > To me that doesn't look right. >  > >  > Can anyone suggest what could be causing this?  I don't recall seeing >  > this message some time ago so I suspect it's a recent change in either >  > dovecot, or pam or glibc etc.. >  > >  > Thanks, >  > Reuben