Hi, On 28/8/2020 11:25 am, Viktor Dukhovni wrote: > On Fri, Aug 28, 2020 at 02:04:36AM +0000, Dominic Lai wrote: >> We have a few number of users who make use >> of vacation program (when they are on leave) so >> that upon activation, a .forward file is made >> under the home directory as: >> >> \username, "|/usr/bin/vacation username" > > Well, aliases(5) and .forward files are processed by the Postfix > local(8) delivery agent, and if you replace it with something else, then > aliases(5) and .forward files may not be processed at all. > > And really the question that you should be asking is how to deliver > email both to Dovecot and to a vacation program. The "\username" thing > is perhaps a distraction, unless you have no other means to turn the > feature on. >
The mail log reports as follows: Aug 28 10:11:36 postfix-server postfix/local[3915542]: 2D8F33028D88: to=<usern...@postfix-server.mydomain.com>, relay=local, delay=0.06, delays=0.05/0/0/0.01, dsn=5.4.6, status=bounced (mail forwarding loop for usern...@postfix-server.mydomain.com) When I look at dovecot log (I have got mail_log plugins on), and I note that postfix bounced this message even before handling it to dovecot-lda (ie. dovecot-lda does not even record any handling of this transaction). However, if I changed the .forward as follows: username@localhost, "|/usr/bin/vacation username" Then vacation works, username can also receive a copy of email. If: \username, "|/usr/bin/vacation username" the sender would receive a mailer bounce complaining of mail forward looping, while vacation part works. This is why I asked if "\username" is not honored anymore. Dominic P.S. : Postfix version - 3.3.1, bundled from CentOS 8 distribution -- Dominic Lai Department of Computer Science and Engineering HKUST
