Mail aliases and routing

Juergen Weiss ( (no email) )
Fri, 21 Aug 1998 10:58:20 +0200

Maybe this is a stupid question, but I couldn't find an answer.

If I configure an alias for a POP3-user on my mailserver (metainfos
sendmail) pointing to any other server in the net (not within my lan) I am
wondering how the mail will travell? If someone is sending a mail from A to
me (B) and this mail is aliased to C will this cause twice the traffic on my
internetconnection A-B and B-C? Or will this be recognized on the SMTP-side
so that the Mail directly goes from A-C causing only a litte handshake
traffic on my connection?
Does this depend on the Mailserver?

I am asking this because I have some customers doing a lot of mail with
large attachments (1 - 5 MB).



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