Date: Wed, 19 May 2010 20:52:11 +0100 From: krad <kraduk@googlemail.com> To: Chuck Swiger <cswiger@mac.com> Cc: Marco Beishuizen <mbeis@xs4all.nl>, freebsd-questions@freebsd.org Subject: Re: downloading e-mail is blocking network Message-ID: <AANLkTik8tMwlhmgQ9UoAbgd7CRDEPXLAy-6jp1oSs4dw@mail.gmail.com> In-Reply-To: <F624D697-FB70-45BC-AAE3-250C10B927E9@mac.com> References: <alpine.BSF.2.00.1005192101570.5174@yokozuna.lan> <F624D697-FB70-45BC-AAE3-250C10B927E9@mac.com>
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On 19 May 2010 20:21, Chuck Swiger <cswiger@mac.com> wrote: > Hi, Marco-- > > On May 19, 2010, at 12:15 PM, Marco Beishuizen wrote: > > I'm having a strange network problem. Every day, when I turn on my > computer, fetchmail is started and procmail is putting all my mail in the > correct mailboxes. This takes some time because I receive a few hundred > e-mails a day (mostly mailing lists). > > > > The strange thing is that when the e-mail is being downloaded, all other > network traffic seems blocked. So browsing the internet is not possible when > fetchmail/procmail is busy. At first I thought I had a problem with DNS > and/or DHCP and/or my ADSL modem because after a reset of the modem, the > problem mostly went away, and there were some "hostname not found" errors in > my logfiles. But today I just waited for a while and discovered that when > fetchmail/procmail is finished, the internet suddenly was reachable again. > > > > So has anyone has seen fetchmail/procmail blocking network traffic > before? > > Are you using NAT? > > 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. > > Regards, > -- > -Chuck > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > I'd be surprised if its that as you would have to have 1000's of connections open to cause an issue like that, even one a fairly low end router. One simple way round would be to schedule your computer to turn on an hour or so before you need to use it. A lot of bios have this feature these days
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