Date: Thu, 20 Nov 2003 12:23:35 +0200 From: Etienne Ledoux <etienne@unix.za.org> To: freebsd-isp@freebsd.org Subject: pop3 timeout problems. Message-ID: <200311201223.35255.etienne@unix.za.org>
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Greetings, I've recently changed/upgraded our mailserver to a new enviroment. I'm using postfix, courier-imap on my mailservers and I keep the mailboxe= s on=20 a shared nfs drive. Since the move we have been having a few complaints a= bout=20 timeouts while downloading mail via pop3. These timeouts would occur on small and large mailboxes, with only a few=20 messages in them. The client has a diginet line which isn't saturated. Th= e=20 connection would start out ok and then it just slows down to a grinding h= alt=20 and eventually times out. One thing we have noticed is that all the=20 complaints are coming from users using Windows XP. We have tested downloa= ding=20 from the same windows xp machine using outlook and outlook express and th= e=20 same thing would happen. But if we downloaded the same mailbox from a=20 different machine using windows 98 on the same lan using the same diginet= =20 connection the mail downloads quickly without a problem (we also tried=20 different network cables). We have other clients experiancing the exact s= ame=20 problem and they are also windows xp users on diginet lines. I mount the nfs share from my bsd boxes using the -r=3D8192,-w=3D8192 opt= ion. The servers are handling allot of mail daily but aren't under extreme hea= vy=20 load. I haven't tried lowering the MTU and I haven't tried another pop3 server = yet.=20 But this will be my next steps to try and solve the problem. Could this be a problem with windows xp (why wasn't it a problem before I= did=20 the move ?) What could be causing this ? Any ideas, suggestions ? What can I do to try and fix this. tx. e.
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