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Twissell
Asked: 2020-05-22 22:33:15 +0800 CST

Exim:Use specific smarthost for certain recipient domain only

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I'm looking for solution for the case described below.

I've to send mail to some domains (hotmail, outlook) via smarthost, because of blocking my server's IP (Hetzner) on side of Microsoft.

Key point here is that I need to relay not specified sender to smarthost(it's desirable though), but one and only one recipient domain (hotmail.com) should relayed via external smarthost

Excerpt from example of exim config

send_via_gmail:
   driver = manualroute
   domains = ! +local_domains
   senders = [email protected]
   transport = gmail_smtp
   route_list = "* smtp.gmail.com"

Solution is quite simple at a glance.

Just adding domain needed in domains config list.

That's enough or not? May be there is better way to go.

P.S. Hmm.. or domains = ! +local_domains refers to sender's domain not recipient's?

smtp exim smarthost

1 Answers

  1. Best Answer

    The domains contains the target domains to which the router should send messages, so replacing it with a domainlist consisting "outlook.com" and "hotmail.com" will make Exim route those messages via the smarthost.

    As a side note, your config contains a senders parameter as well, so the router will decline if the sender is not [email protected], regardless of the target domain.

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