Sender address rewriting

[Vladislav Kurz <vladislav.kurz@webstep.net>]

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Hello all,

We need to rewrite sender adresses from the form:
login@branch.company.tld
to the following form:
firstname.lastname@company.tld
because the main SMTP server has a list of valid sender adresses in that form.

There was no problem with sending mail from users, as they have their mail 
clients configured to use firstname.lastname@company.tld. But the problem 
appeared when we started to use vacation. The vacation replies used the form 
login@branch.company.tld, and such mail bounced back to postmaster.

We use fqdnaliases to deliver mail, and I foud that userdb can rewrite the 
- From header, but it was not sufficent. The upstream SMTP server still sees 
the "bad" sender adress (perhaps in SMTP command MAIL FROM ...) and refuses 
to deliver the vacation replies.

Any help & hints will be appreciated.
- -- 
Best regards and thanks in advance
        Vladislav Kurz

=== WebStep, s.r.o. (Ltd.) ========= a step to the Web =======
address : Turgenevova 18, 61800 Brno, CZ, tax-id: 289-25528262
office : Veveri 9, 60200 Brno, CZ, tel & fax: +420 541 128 341
=== www.webstep.net =========== vladislav.kurz@webstep.net ===

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