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[ I already tried posting this, but from an unsubscribed address.
Hopefuly the moderator will notice this repost and cancel the other
message. I apologize if it gets posted twice ]
Hi folks. I've got a site using sendmail, and I'm trying to duplicate
some weird rewriting and redirecting that it does in Exim 4.20.
Basically, the mail server in question is nothing but a relay. There
are no local mailboxes. Mail addressed too user@domain is redirected
based on a 1-to-1 mapping in a dbm file, basically just like
/etc/mail/aliases, with one exception: We pass the sendmail "+ hack"
through to the recipient of the redirected message.
So, assume the aliases file contains
foo: foo@???
mail to foo@domain will be redirected to foo@???, including
envelope recipient rewriting. The hard part is that foo+bar@domain will
be redirected to foo+bar@???, and the envelope recipient will
be rewritten to foo+bar@???. That's for any value of bar; we
don't know it in advance.
The sendmail.cf to make this work is evil, but it does work. I think
Exim can accomplish what I need, and probably be less evil that
sendmail, but I'm fairly inexperienced with Exim's rewriting
capabilities.
I can do it (I think... exim -brw indicates that it's doing the right
thing) using two dbm lookups, if I store the local-part and the domain
of the recipient in separate dbm files, like this:
N^([^!]+)\+(.*)@domain$\N "${lookup{$1}dbm{/usr/local/exim/etc/csail.names.db} {$value}fail}+$2@${lookup{$1}dbm{/usr/local/exim/etc/csail.domains.db}{$value}fail}" T
But I'd certainly like to be able to do it in a single dbm lookup.
Any help would be greatly appreciated! Thanks!
noah
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