SMTP problems from *.ipt.aol.com

[Ajai Khattri <ajai () bway net>]

I have several users who connect to our mail server from an IP in the
*.ipt.aol.com namespace. All are complaining about intermittent SMTP problems.
I see that outbound SMTP traffic is proxied through AOL servers to our mail
servers. Has there been a change recently causing this to not work?

Our mail server does a name lookup on the IP and every once in awhile this will
fail. Im assuming AOL DNS servers stop answering queries occassionally?
 
Any ideas much appreciated.

-- 
Aj.
Sys. Admin / Developer