On 29 Aug 2005 at 9:07, Craig Whitmore wrote about
"[exim] Blocking non-existant Domain":
| I've noticed that Exim accepts non-existant domain names in the mail from.
Not by default, it doesn't.
| Has anyone an ACL which will block this? (ie if looking up a domain and
| getting NXDOMAIN) to give a fail in the mail from acl (or similar)
In the sample config file, the following stanza in the RCPT ACL will
reject messages with unroutable sender domains:
# Deny unless the sender address can be verified.
require verify = sender
One mistake that can prevent this stanza from having the intended
effect is when you use a smarthost for outgoing external email, and
you forget to add no_verify to the manualroute router that routes non-
local mail to the smarthost.
- Fred
