[Techtalk] Postfix Virtual Domain Configuration Driving Me Nuts

[Kagan MacTane]

Hi, Merryll--

Thanks for the suggestion. I looked at the aliases(5) documentation, and 
it says the first part of a line should be just the local-part of the 
address -- no domain name. I'm not sure how I can make the distinction 
between the various addresses with just the local-part. Is there 
something I'm missing? Thank you.

--Kagan MacTane

On 4/3/2022 18:42, Meryll Larkin wrote:
> Hi Kagan,
>
> I am not a Postfix expert, but I do know Sendmail.  I have one suggestion that may or may not help/fix the situation.  I am just trying to be helpful, but I may not have the expertise you need.....
>
> If it were me, I would let /etc/aliases do more of the heavy lifting.  All the other config files, just use them to make sure you are receiving email from ALL the domains you need to receive email from.  Use /etc/aliases for the delivery rules.  Remember to run "newaliases" after reconfiguring /etc/aliases.
>
> Look at the /etc/aliases documentation.  You can use wildcards in there.
>
> If you have already tried this and it does not work, I apologize.
>
> Meryll Larkin
>
>
> -----Original Message-----
> From: Kagan MacTane [mailto:kai at mactane.org]
> Sent: Saturday, April 2, 2022 4:00 PM
> To: Techtalk at linuxchix.org
> Subject: [Techtalk] Postfix Virtual Domain Configuration Driving Me Nuts
>
> I'm at my wits' end with my Postfix configuration. I have machine whose
> canonical name is brain-like-a-sieve.wandererblue.com. I have a variety
> of historical/legacy domains, addresses, and users here, and I'm trying
> to migrate off of one domain in particular.
>
> Up until now, I've had the following situation: mail for kai at mactane.org
> and kagan at mactane.org go to the user kmactane's inbox. Mail for
> digitalsidhe at silmemar.org goes to user digitalsidhe's inbox. And I set
> up the new wandererblue.com domain, making it the canonical/default
> domain in DNS. Email to wanderer at wandererblue.com and
> wb at wandererblue.com go to user wanderer's inbox.
>
> (If it matters, these inboxes are all Maildirs owned by user accounts on
> the machine, available via IMAP and POP3.)
>
> I'm trying to get rid of the silmemar.org domain. I'd like to have email
> to anything @mactane.org go to the kmactane inbox, have email to
> digitalsidhe at wandererblue.com go to the digitalsidhe inbox, and have
> anything else @wandererblue.com go to the wanderer inbox. This would
> mean kagan at wandererblue.com goes to wanderer, while kagan at mactane.org
> goes to kmactane.
>
> What I've actually got, instead, is that kagan at mactane.org is going to
> wanderer, which is annoying because I have a lot of IMAP folders set up
> on the kmactane inbox and don't want to migrate them. Also, I'm getting
> messages in the log:
>
>       Apr  2 21:08:49 brain-like-a-sieve
> postfix/trivial-rewrite[3935407]: warning: do not list domain
>       wandererblue.com in BOTH mydestination and virtual_alias_domains
>
> However, if I remove wandererblue.com from mydestination, I can no
> longer receive email for kagan@ anything at all; I then get items like this:
>
>       Apr  2 21:07:45 brain-like-a-sieve postfix/error[3935328]:
> 4A355420097: to=<wanderer at wandererblue.com>,
>       orig_to=<kagan at mactane.org>, relay=none, delay=0.32,
> delays=0.31/0/0/0, dsn=5.1.1, status=bounced (User
>       unknown in virtual alias table)
>
> Here is what I hope are the relevant portions of my main.cf file; I can
> send the whole thing if it will help:
>
>      myhostname = brain-like-a-sieve
>      mydomain = wandererblue.com
>      alias_maps = hash:/etc/postfix/aliases
>      alias_database = hash:/etc/aliases
>
>      mydestination = localhost.$mydomain, localhost.localdomain,
>      localhost, wandererblue.com
>      # The following line removes the warning, but doesn't deliver mail.
>      #mydestination = localhost.$mydomain, localhost.localdomain, localhost
>
>      virtual_alias_domains = hash:/etc/postfix/primary-domains
>      virtual_alias_maps = hash:/etc/postfix/virtual
>
>      local_recipient_maps = unix:passwd.byname $alias_maps
>
> The /etc/postfix/primary-domains file does have wandererblue.com in it,
> along with the other domains. All of the following lines (as well as
> many others) appear in /etc/postfix/virtual, and I have run "postmap
> /etc/postfix/virtual" and "/etc/init.d/postfix reload".
>
>      mactane.org                                   DOMAIN
>      kai at mactane.org                          kmactane
>      kagan at mactane.org                     kmactane
>
>      silmemar.org                                   DOMAIN
>      digitalsidhe at silmemar.org           digitalsidhe
>      kagan at silmemar.org                     digitalsidhe
>
>      wandererblue.com                         DOMAIN
>      kai at wandererblue.com                wanderer
>      kagan at wandererblue.com           wanderer
>
>      digitalsidhe at wandererblue.com digitalsidhe
>      ds at wandererblue.com                  digitalsidhe
>
>      wanderer at wandererblue.com     wanderer
>      wb at wandererblue.com                 wanderer
>
> I can't figure out what's happening. It seems like any mail I try to
> direct to kmactane winds up in wanderer's inbox instead.
>
> I'll be very grateful for any help. Please let me know if you want me to
> send full files, log output, or anything else. Thank you very much.
>
-- 
Kagan MacTane
(he/him/his)