Quoting David Chait <davidc@???>:
> I am starting to see this on occasion, which results in legitimate mail
> being bounced, has anyone else run across this, and if so how do I get
> around it? Exim 4.x on RH 7.3
>
> host amdext.amd.com [139.95.251.1]: 503 amdext.amd.com Duplicate
> HELO/EHLO
Which 4.x version is this?
If previous than 4.03, see changelog 11 for 4.03.
If 4.05 or 4.10 and using an encrypted session, see changelog 10 for 4.05
