forwarded emails

Mark Sapiro mark at
Wed Oct 21 22:47:10 UTC 2015

On 10/21/2015 02:57 PM, Walt Thiessen wrote:
> How does MailScanner handle forwarded emails?
> For instance, let's say that joe at domain.tld sends an email to
> bill at domain.tld. Bill has bill at domain.tld set up to forward to
> billyboy at domain.tld.
> If there is a whitelist rule that whitelists emails from joe at domain.tld
> to billyboy at domain.tld, will this particular forwarded email get
> delivered due to that whitelist rule?

I don't think so. MailScanner looks at the sender and recipient of the
message as it arrives at the MTA. MailScanner knows nothing about the
subsequent forward that might occur. It is not until the MTA attempts to
deliver the mail to bill at domain.tld (after MailScanner has processed it)
that it will find the .forward and redirect the mail to billyboy at domain.tld.

Mark Sapiro <mark at>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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