Re: [exim] NDR

Tech Gurus via Exim-users <exim-users@???> (Di 04 Apr 2017 16:15:29 CEST):
> What is the best way to handle it at the door? . If sender is sending to
> list of recipients and one of them is not valid email .

You should check the recipient at SMTP time in your ACL (hint: verify =
recipient in your rcpt ACL)

If this works, depends on your setup. Probably recipient callouts are an
option. But, this depends on your backend.)

--
Heiko