> ---------------------------- Original Message ---------------------------- > Subject: Re: [exim] Error relaying large emails over two exim hosts > From: "Florian Weimer" <[email protected]> > Date: Sun, December 21, 2008 1:55 pm > To: [email protected] > Cc: [email protected] > -------------------------------------------------------------------------- > > * OPTITAS Info: > >> I did some investigation a few weeks ago and found out that after a >> while fragmented packets are sent over the Internet line. I tried >> some "optimized" MTU settings but could not solve the problem. I do >> not think it's a problem with the MTU. > > It may be related to filtered ICMP packets. You should check what > fwbuilder does in this area. > > Checked against the fwbuilder settings: Is not a problem with ICMP packets. I also checked the transfer without firewall: Problems still exists. Could it be an option to dig into the packet transfer and provide tcpdumps for both servers?
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