Hi Erik, I might have been a little quick to react. Explicitly setting it to empty actually makes it an empty value :)
What $mydestination means is what domains the machine should accept mail for as its final destination. Explicitly setting it empty would ensure that no mail whatsoever is ever considered to be local, what would mean that it ends up in a local mailstore. Where it will probably be unnoticed forever... Your predecessor probably did this to make absolutely sure that that would never happen, and that every message had to be passed on to the central relaying server. Kind regards, Hans On 25-09-2020 17:07, Erik Thuning wrote: > Hi Hans, > > Thanks for the clarification. Just to make sure I understand correctly, > setting "myhostname = " is equivalent to not setting the value at all? > > The output of 'postconf' vs 'postconf -d' confused me here: > > # postconf | grep 'mydestination =' > mydestination = > # postconf -d | grep 'mydestination =' > mydestination = $myhostname, localhost.$mydomain, localhost > > > /T > > On 2020-09-25 16:48, Hans van Zijst wrote: >> Hi Erik, >> >> If $mydestination is empty, it defaults to $myhostname, which defaults >> to the FQDN of the machine: >> >> http://www.postfix.org/postconf.5.html#mydestination >> >> Kind regards, >> >> Hans >> >> >> On 25-09-2020 16:37, Erik Thuning wrote: >> > Hi! >> > >> > I've inherited a server environment where all the servers have local >> > postfix agents installed, relaying mail to our central email server. I'm >> > trying to understand the main.cf settings shared by all our servers, but >> > there is one setting that I can't understand: >> > >> > mydestination = >> > >> > Aka nothing assigned to the mydestination value. To me the documentation >> > makes it sound like this is an error, but I'm unclear as to the exact >> > consequences of forcing this setting to be blank. Mail delivery works as >> > expected (mostly). >> > >> > If it makes any difference, here is the complete main.cf file that we >> > deploy: >> > >> > mydomain = dsv.su.se >> > myorigin = $mydomain >> > mydestination = >> > relayhost = [smtp.su.se] >> > mynetworks = 127.0.0.0/8 [::1]/128 >> > inet_interfaces = loopback-only >> > biff = no >> > append_dot_mydomain = no >> > >> > >> > Thanks, >> > Erik Thuning >
