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Communicator and the 40sec send delay

From: Heath
Date: Friday, June 9, 2000
Time: 5:49:37 am

After discovering the fix, I'm hoping that somebody here can explain
why this is happening.

Running SIMS 1.8b7 mailserver software (outside my Firewall), CISCO
Firewall, client machine running Netscape Communicator (v4.7 or
various) behind the firewall, at this point let me leave out QuickDNS
and simply use the ISP's DNS (also outside the firewall).

The problem is a simple one, in the preferences for Net Comm 4.7, if
the email address is set to <user>@deepend.co.uk then it used to take
43 seconds to send an email. If you set the email address to
<user>@mailhost.deepend.co.uk and the Reply-to-address to
<user>@deepend.co.uk it would send instantly.

It happens ONLY with Netscape on the Mac or PC...

In the last 48 hours I discovered that if I got my ISP to add an A
record for deepend.co.uk, to equal the resolved address
195.92.122.194 (my mailhost) then the problem goes away......I've
also done it with one other domain I manage mail for, so this
additional A record solves the problem.

What I want to know is why am I having to add this A record to every
domain I manage mail for?
and by running Quick DNS locally (behind my firewall) how do I add
these A records that my ISP has been adding (cause it obviously
solves the problem).

I did give it a try yesterday, but being a newbie everything's a blur :)

TIA



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