From owner-freebsd-questions@FreeBSD.ORG Wed May 19 19:52:12 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E32D61065675 for ; Wed, 19 May 2010 19:52:12 +0000 (UTC) (envelope-from kraduk@googlemail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 6EDB18FC20 for ; Wed, 19 May 2010 19:52:12 +0000 (UTC) Received: by fxm4 with SMTP id 4so1537906fxm.13 for ; Wed, 19 May 2010 12:52:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=Unf+6NW1BMEpX4ZHRpWfY5QDMuGYPOdmfjafyHWScYs=; b=MobFo9U12DTIfVJHBMztvud9hnGZiBgWTwPfAaMkTtfoapvjsDz9WDS8ZxJWR8RN4g SDxC1b9LQKlcrZcSR5C8do75oynuqpA1QlXDkB8lz+D7Eu7CbaR5BFXUc7wAGpSWn1DL wlVsKqEI18Ii1KaMBvG/yhgm3oO7kblVaoI7k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=XIYloEGTJ+kYtOphOYmUz6xgDqp3+XYeuO/5SfuYjfIy1W2D6aU3+X3ULgwqKq+Qic 2VHOAr3OgvbjWEUa/OFUzXh5m3IQCvonSwF+xhnfNZHFTEIcxu64Ntd3e52TrAftuaqC nQsmU8Ij7cU3h/cnrviKwOWk6snFAn4fKKRgQ= MIME-Version: 1.0 Received: by 10.239.160.197 with SMTP id e5mr786661hbd.201.1274298731392; Wed, 19 May 2010 12:52:11 -0700 (PDT) Received: by 10.239.165.129 with HTTP; Wed, 19 May 2010 12:52:11 -0700 (PDT) In-Reply-To: References: Date: Wed, 19 May 2010 20:52:11 +0100 Message-ID: From: krad To: Chuck Swiger Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Marco Beishuizen , freebsd-questions@freebsd.org Subject: Re: downloading e-mail is blocking network X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 May 2010 19:52:13 -0000 On 19 May 2010 20:21, Chuck Swiger 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