Have upgrade server to Redhat 6.2 as a Web, DNS and mail server
(sendmail). After upgrade, our user got 40s to 1m delay when connects to
mail server. but will become normal for the rest of the day after that.
The delay will happen again at beginning of next day.
Have checked your support website and telling me that I can add
"define(`confTO_IDENT',`0s')" to fix the problem. I have tried but no
Sounds more like a local DNS problem.