iMS determines the MX from the DNS and if that fails it can determine the server name 
from the domain name if you configure it that
way.  As for the slowness, I'm doing some investigating on that.  BTW - what version 
POST are they using?

Regards,

Howie

----- Original Message -----
From: "Len Conrad" <[EMAIL PROTECTED]>
To: "inFusion Support List" <[EMAIL PROTECTED]>
Sent: Saturday, June 30, 2001 11:39 AM
Subject: Re: [iMS] Re: [iMS]


> During those 200 test msgs form iMS to the outbound gateway, Steven said he
> had 130+ errors like this:
>
> >  **********************************************
> > >     THIS IS A WARNING MESSAGE ONLY
> > > YOU DO NOT NEED TO RESEND YOUR MESSAGE
> > > **********************************************
> > > The original message was received at 14:56:40 Jun 29, 2001
> > >
> > > Message Subject: Test 7
> > >
> > > ----- The following address had transient non-fatal errors -----
> > >
> > > [EMAIL PROTECTED]
> > >
> > > ----- Transcript of session follows -----
> > > Warning: message still undelivered after 0 hours
> > > Will keep trying until message is 24 hours old
> > >
> > >
> > > SOCKET ERROR: (Sock Connect) [10060] Connection timed out
> > >
> > > Entire Transaction follows:
> > >
> > > SOCKET ERROR: (Sock Connect) [10060] Connection timed out [Go2France.com]
> >(172.16.2.49)
>
> The ip is important because that�s not the ip of the gateway but a Steven�s
> load balancing box, a RAD Linkproof, I think.  The traffic doesn�t pass
> through the box. The resolver in the iMS box queries DNS for an A record,
> and the Linkproof box, delegated with authority for that child zone,
> returns a different ip based on it�s estimate of which of the two outbound
> gateways is less busy.  I have no idea how the RAD box polls the 2 gateways
> to determine busy-ness.
>
> Does the 172.16.2.49 mean iMS�s tcp stack saw that error when talking to
> that ip?
>
> If so, then that�s a 2nd pb in this setup, where the first one is the
> extreme slowness of the SMTP sessions between the iMS and gateway boxes.
>
> Len
>
>
> http://MenAndMice.com/DNS-training
> http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K
> http://IMGate.MEIway.com  : Build free, hi-perf, anti-abuse mail gateways
>
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