Re: [exim] Verify outgoing email while using a smarthost

> From: Jason

> Is it possible for Exim to verify outgoing mail when using a smarthost?
> Specifically, I'm looking to have Exim verify (using dnslookup) that the
> domain exists for the recipient.

Besides the router, you need "verify = recipient" (without callout)
in rcpt ACL before accepting the submitting message.

> If the domain returns NXDOMAIN (or some
> other DNS error), defer it

If the message is submitted by a Windows MUA, it may act weird in response to
defer.