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

["Chris \"Oger\" Gebhardt" <oger@xxxxxxxxx>]

Brian -

Thanks for that tip.  Now.... what if we do NOT have ability to set up our
reverse DNS records?  Can we deactivate the business?

--Chris

----- Original Message -----
From: <BSmith@xxxxxxxxxxx>
To: <cobalt-users@xxxxxxxxxxxxxxx>
Sent: Friday, April 05, 2002 11:32 AM
Subject: RE: [cobalt-users] slow smtp and my clients just about to make me
go ;-(


>
> -----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
>
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