From: mouss (moussnetoyen.net)
Date: Fri Mar 28 2008 - 14:25:38 CDT

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Jay Hall wrote:
> Earlier this week, one of the organizations we communicate with
> regularly changed their network setup. Now, they have a single
> incoming server for all of the branch offices, and each branch office
> has different from and reply to addresses.
>
> For example, the from address of an e-mail would be
> jay.hallnorth.domain.com and the reply-to address is
> jay.halldomain.com. If my understanding is correct, address
> verification contacted north.domain.com. Since their outbound server
> does not accept incoming e-mail, the address verification fails.
>
> Is there a way to work with the reply-to address as opposed to the
> from address for certain domains?

There is no reply-to address in smtp. smtp defines an envelope sender
(used with the MAIL FROM command). this addres must be valid. mail
from invalid envelope senders can safely be rejected.

That said, don't use address verification without being authorized by
the owner of the sender domain. unauthorized probes are a form of abuse.

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