On Wed, May 6, 2009 at 00:40, Eric Cross <[email protected]> wrote:
> Our mailserver (non-Exim..it's Kerio 6.6.2) is experiencing a consistent and > repeatable smtp banner delay when connecting to Exim 4.69 mail servers. > When telnet'ing from our outbound MTA to port 25 on four different Exim 4.69 > domains/servers there is a delay of precisely 2 minutes and 30 seconds > before I see the SMTP banner. When I telnet from a different IP address > (same /24 network as the Kerio mail server) to the same four Exim servers, I > receive no delay. > > I suspect there is some type of greylisting/antispam going on here, but the > delay seems to be quite excessive. I have checked spamhaus to see if our > server's IP is listed currently, but it is not. > > Would you folks know of a reason why Exim build 4.69 would be behaving this > way consistently across four different domains? I have not seen this issue > other than on Exim 4.69 (but I have only seen it today on these four > domains). It is more likely that the other end is doing a reverse lookup and that is timing out. Do you have a PTR record setup for that IP address? regards, John -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
