On 22-11-19 22:48, Ralph Seichter via dovecot wrote:
* Robert via dovecot:
We use a simple system for routing emails to different email users by
postfixing the addresses with the actual user: xxxJohn@domain;
yyyJohn@domain etc all will be delivered to user John.
(This way John can invent a new email address on-the-fly and that will
be delivered to his email box.)
This seems like a strange way achieve flexible email addresses. Are you
aware of sub-addressing? It has been around for ages, and is supported
by Dovecot (and Gmail, incidentally).
Imagine an existing email account <al...@example.com>. If alice wants to
use a subadress, she signs up with <alice+...@example.com>, and Dovecot
can automatically place incoming mail for that address into INBOX/foo
(or just INBOX if INBOX/foo does not exist). Alice can use as many
sub-adresses as she needs without anybody making config changes.
Frankly, the Sieve-based approach you describe seems pretty complicated
in comparison.
From the OP it seems that they separate mail for different users not at
the MTA level, but at at the user level using sieve. That seems very
inefficient to me.
There are nice tricks you can do with virtual alias maps and pcre within
postfix to split email to specific user accounts, which could also
accommodate other alias schemes than standard subaddressing (such as yours).
Kind regards,
Tom
