Roman Gelfand:
> 2 client machines connect via telnet to postfix smtp server on port 25.
> All machines are on the same subnet. One machine gets helo
> instantaneously. The other it takes roughly 20-30 secs. I had similar
That is surely the result of DNS or /etc/hosts configuration issues.
Postfix looks up the client hostname in /etc/hosts or DNS, then it
looks up the IP address for that hostname in /etc/hosts or DNS.
Look for differences in /etc/hosts, and for differences in PTR and
A records, for the affected IP addresses.
Wietse
