On 30.03.2018 02:12, Scott Ruckh wrote:

I saw another thread about this topic, but I did not understand the solution. . .

I recently discovered my bounced messages were not getting delivered.  Obviously since I was not getting any messages, I thought everything was fine.

Anyway, my maillog has entries similar to below for bounced messages:

Mar 29 10:48:09 firewall postfix/pipe[9089]: 19565807: to=<myuser@my.domain>, relay=dovecot, delay=0.11, delays=0.02/0.01/0/0.08, dsn=5.3.0, status=bounced (command line usage error. Command output: lda: Fatal: Invalid -f parameter: Missing domain )

In the previous thread discussing this issue it mentioned that this was a dovecot error and possibly due to a dovecot 2.3.0 upgrade.  I am running dovecot-2.3.0-1.1 on a CentOS 7 server.  The solution from the other thread simply stated that the original poster is instead using lmtp instead of lda, or at least that it was I got from the thread.

If using lmtp instead of lda is the correct solution, could I get an example of what configuration changes need to be made to make that happen?

Otherwise, has anyone else seen this error and know the solution to make it work.

My current dovecot configuration for postfix (master.cf) is using the de-facto standard from many web docs:

dovecot   unix  -       n       n       -       -       pipe flags=DRhu user=vmail:vmail argv=/usr/libexec/dovecot/deliver -f ${sender} -d ${recipient}

This is the same configuration that was originally setup and has worked for years; until the bounced message problem was recently discovered.

If anyone has seen this error and knows the solution, I would appreciate the help.

Thank You. Scott

This is because dovecot 2.3 expects ${sender} to contain domain name. Using -f someone will break, but -f someone@somewhere will work.

Aki