How config Exim4 to accept only authenticated sender

Question

How can I setup Exim to accept only authenticated email from managed domain address? I'm receiving spoofed email.. from myself.

score 1 · Accepted Answer · answered Jan 15 '19 at 13:26

1

In your case you can make a reasonable assumption that "real you" will never submit the message from the external MTA. So you can use the next ACL at the RCPT stage:

deny 
  sender_domains = +local_domains
  hosts          = !+relay_from_hosts

answered Jan 15 '19 at 13:26

Kondybas

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score 0 · Answer 2 · answered Jan 15 '19 at 15:40

0

You can set up a suitable SPF record in your DNS that designates which hosts may send mail from your domain, and configure your mail host to check those SPF records.

answered Jan 15 '19 at 15:40

wurtel

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How config Exim4 to accept only authenticated sender

2 Answers2