Re: [Exim] firewall and email problems

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Autor: Tom Kistner
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A: Wakko Warner
CC: exim-users
Assumpte: Re: [Exim] firewall and email problems
Wakko Warner wrote:

> As I stated before (weeks ago), I'm having problems receiving emails from
> some hosts through a firewall. The fireall is sonicwall.


So that is your firewall or the other hosts one?

I see you are on dialup.
Is your mailserver on the router, or behind it?
What is your MTU size on the uplink? 1500 or smaller?

My guess is that the remote ends sends you "please fragment" ICMP
messages that your firewall is dropping, or vice versa.

/tom


--
Tom Kistner <tom@???>
ICQ 1501527 dcanthrax@efnet
http://duncanthrax.net