Ascend Archive
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RE: (ASCEND) Slow e-mail send when using NAT on P75
Seems to me that having a static mapping to the P75 would make more sense,
then, since it would give a "connection refused" message too, you wouldn't
have to staticly map every computer on the network. :)
-Rob-
On Mon, 10 Aug 1998, Larry Rosenman-CyberRamp System Administration wrote:
> But a WIN/MAC will give CONNECTION REFUSED very quickly, but if the
> NAT box is routing the port to the bit bucket, you get the
> 30 second (or Timeout.Ident time) wait.
>
> Larry Rosenman
>
> --
> Larry Rosenman, Sr. System Administrator, CyberRamp Internet Services
> E-Mail: ler@cyberramp.net, http://www.cyberramp.net
> Voice: (214) 343-3333/(817) 461-8484 (Metro)/Fax: (214) 343-3727
> Technical Support: (214) 340-2020/(817) 226-2020 (Metro)
> U.S. Mail: 11350 Hillguard Rd, Dallas, TX 75243-8311
>
> -----Original Message-----
> From: owner-ascend-users@max.bungi.com
> [mailto:owner-ascend-users@max.bungi.com]On Behalf Of Rob Myers
> Sent: Monday, August 10, 1998 9:12 AM
> To: ascend-users@max.bungi.com
> Subject: Re: (ASCEND) Slow e-mail send when using NAT on P75
>
>
> Both good suggestions, but as far as I know, Windows/Mac boxes don't have
> an auth/ident server monitoring port 113, so it would time out anyway,
> even if you were doing straight IP routing...
>
> The reason I say this is that we had many customers complaining about slow
> response times to send e-mail and when we turned this feature off in
> Sendmail everything was back to its normal, speedy self.
>
> If it were a reverse-lookup problem you would get some sort of error from
> the SMTP server about that, rather than a timeout.
>
> -Rob-
>
> > The mail server you're delivering the mail to is trying to connect
> > to your auth/ident port at 113 (to no avail). After a while it will
> > time out and accept the mail anyway.
> > A simple solution is to create a static (NAT) mapping on your
> > pipeline that points to port 113 on the machine inside your LAN that
> > is trying to send the mail.
>
> [...]
>
> > Make sure that the single IP you are using has a name associatied with its
> > reverse-lookup.
>
>
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