Change dovecot hostname

[Scott W. Sander]

Edgar,

/etc/hostname has "appserver4".  I'm using this server for more than just a
postfix+Dovecot server, so don't want to name it "mail.domain.test".

In any case, I already solved the issue I was having by adding "hostname =
mail.domain.test" to /etc/dovecot/10-master.conf and reloading the
configuration.

Easy-peasy, just doesn't appear to be well documented.

---
Scott


On Tue, Aug 23, 2016 at 7:35 PM Edgar Pettijohn <edgar at pettijohn-web.com>
wrote:

> I'm chiming in kind of late, but what's in /etc/hostname?
>
> Sent from my iPhone
>
> > On Aug 23, 2016, at 6:03 PM, Scott W. Sander <scottwsx96 at gmail.com>
> wrote:
> >
> > Well, I tried setting the following in /etc/environment and restarting
> the
> > server:
> >
> > DOVECOT_HOSTDOMAIN="mail.domain.test"
> >
> > After doing so, I verified that the command "dovecot --hostdomain"
> returned
> > "mail.domain.test" and not "appserver4.domain.com"; however, the email
> > received header still shows:
> >
> > Received: from mail.domain.test by appserver4.domain.com (Dovecot) with
> > LMTP id ....
> >
> > I also tried adding the following line to
> > /etc/dovecot/conf.d/10-master.conf and restarting the dovecot service:
> >
> > hostname = mail.domain.test
> >
> > doveconf shows that "hostname = mail.domain.test", and now the received
> > headers show:
> >
> > Received: from mail.domain.test by mail.domain.test (Dovecot) with LMTP
> id
> > ....
> >
> > So it seems that "hostname" is a valid, respected Dovecot directive.
> >
> > ---
> > Scott
> >
> >
> >
> >> On Tue, Aug 23, 2016 at 4:58 AM Sami Ketola <sami.ketola at dovecot.fi>
> wrote:
> >>
> >> Hi,
> >>
> >> Looking at the source code it seems that the fqdn used in the lmtp
> >> received headers is
> >> fetched from environment variable DOVECOT_HOSTDOMAIN and if that is not
> >> defined
> >> gethostbyname() is used.
> >>
> >> You can try setting that prior launching dovecot.
> >>
> >> Sami
> >>
> >>
> >>> On 19 Aug 2016, at 21:43, Scott W. Sander <scottwsx96 at gmail.com>
> wrote:
> >>>
> >>> I have noticed that the name of my private server running dovecot
> appears
> >>> in email headers rather than the public-friendly name of my server.
> >>>
> >>> Is there a method to specify an alternate server name for the dovecot
> >>> server to use for itself in the dovecot configuration files?  I
> >> performed a
> >>> few Google searches and was not able to find the answer to my question.
> >>>
> >>> -------
> >>>
> >>> user at server1:~$ dovecot --version
> >>> 2.2.9
> >>> user at server1:~$ dovecot -n
> >>> # 2.2.9: /etc/dovecot/dovecot.conf
> >>> # OS: Linux 3.16.0-77-generic x86_64 Ubuntu 14.04.4 LTS ext4
> >>> auth_mechanisms = plain login
> >>> info_log_path = /var/log/dovecot.log
> >>> log_path = /var/log/dovecot.log
> >>> mail_location = maildir:/var/mail/vhosts/%d/%n
> >>> namespace inbox {
> >>> inbox = yes
> >>> location =
> >>> mailbox Drafts {
> >>>   special_use = \Drafts
> >>> }
> >>> mailbox Junk {
> >>>   special_use = \Junk
> >>> }
> >>> mailbox Sent {
> >>>   special_use = \Sent
> >>> }
> >>> mailbox "Sent Messages" {
> >>>   special_use = \Sent
> >>> }
> >>> mailbox Trash {
> >>>   special_use = \Trash
> >>> }
> >>> prefix =
> >>> }
> >>> passdb {
> >>> args = scheme=PLAIN username_format=%u /etc/dovecot/dovecot-users
> >>> driver = passwd-file
> >>> }
> >>> protocols = " imap lmtp pop3"
> >>> service auth {
> >>> unix_listener /var/spool/postfix/private/auth {
> >>>   group = postfix
> >>>   mode = 0666
> >>>   user = postfix
> >>> }
> >>> }
> >>> service imap-login {
> >>> inet_listener imaps {
> >>>   port = 993
> >>>   ssl = yes
> >>> }
> >>> }
> >>> service lmtp {
> >>> unix_listener /var/spool/postfix/private/dovecot-lmtp {
> >>>   group = postfix
> >>>   mode = 0600
> >>>   user = postfix
> >>> }
> >>> }
> >>> service pop3-login {
> >>> inet_listener pop3s {
> >>>   port = 995
> >>>   ssl = yes
> >>> }
> >>> }
> >>> ssl = required
> >>> ssl_cert = </etc/ssl/certs/server1_combined.pem
> >>> ssl_key = </etc/ssl/private/server1_key.pem
> >>> userdb {
> >>> args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
> >>> driver = static
> >>> }
> >>
>