Date: Wed, 19 May 2010 13:48:36 -0700 From: Chuck Swiger <cswiger@mac.com> To: Marco Beishuizen <mbeis@xs4all.nl> Cc: freebsd-questions@freebsd.org Subject: Re: downloading e-mail is blocking network Message-ID: <9D3EAB27-FC60-4B6E-91EE-6110D0061805@mac.com> In-Reply-To: <alpine.BSF.2.00.1005192237570.7083@yokozuna.lan> References: <alpine.BSF.2.00.1005192101570.5174@yokozuna.lan> <F624D697-FB70-45BC-AAE3-250C10B927E9@mac.com> <alpine.BSF.2.00.1005192237570.7083@yokozuna.lan>
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On May 19, 2010, at 1:44 PM, Marco Beishuizen wrote: > On Wed, 19 May 2010, Chuck Swiger wrote: >> Are you using NAT? > > Not that I know of. You presumably would know from the IP your machine has-- if it's RFC-1918 unroutable, NAT is involved. >> It sounds like something has a limited number of NAT state slots available, and is dropping connections past that limit. It probably will help to try to serialize the activity of fetchmail / procmail so that they aren't opening new connections for every email being processed, if that is what is going on. > > Seems worth trying to increase this number but how do I do that? Is this changable in FreeBSD or do I change this in the modem (couldn't find anything about this in the modem though)? It would be in whatever device is doing NAT, assuming it is being used. Running tcpdump against your traffic during this sort of problem would likely be informative. Regards, -- -Chuck
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