RE: [cobalt-users] slow smtp and my clients just about to make me go ;-(

[BSmith@xxxxxxxxxxx]

-----Original Message-----
From: ismail arit
Sent: Friday, April 05, 2002 11:50 AM
Subject: [cobalt-users] slow smtp and my clients just about to make me
go ;-(

connection and mail to:<..> part work reaaaallllyy
slow, then after mail to:<..> everthing just flies!!!

----------------

Ismail,

Slow connection on Linux / Unix hosts are generally related to a reverse DNS
issue.  What happens is when a client connects, the server will try to
validate the user.  It performs a reverse lookup of their IP address.  If it
does not resolve, it takes about 1-2minutes for it to time out.

What you could do is if you manage your IP DNS info, and have reverse
delegation, setup a PTR to look like


@		IN	PTR	domain.com
*		IN	PTR	domain.com

That should take care of the reverse lookup problem.

BTW, If you do this in the gui, it may NOT like the "*", you can either add
all of your IP addresses, or try
just the network ID.

Brian Smith 
CCNA, NCSA
Network Support Engineer
SOLUSERVE
       www.solunet.com
1571 Robert J. Conlan Blvd., Suite 110
Palm Bay, FL  32905
(888)449-5766
fax: (321)-308-7986