On 27 September 2002, David Chait said:
> 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
That's weird. As I understand it, you're allowed to say HELO or EHLO as
many times as you like, and the server should just reset itself each
time. Is this error coming from Exim or some other MTA? Can you
reproduce it in a manual SMTP session? If so, how many HELOs does it
take? If the remote server is rejecting after just two HELOs, I'm
pretty sure it's in the wrong. But if it rejects after, say, 10, it
might be some sort of (slightly misguided) defence mechanism.
In any event, if your server is saying HELO more than once, I'm curious
why. You might try watching the traffic between those two MTAs with a
packet tracer like tcpdump or ethereal.
Greg
--
Greg Ward <gward@???> http://www.gerg.ca/
Everybody is going somewhere!! It's probably a garage sale
or a disaster Movie!!
