On Fri, 2003-09-05 at 23:46, Sean Estabrooks wrote: > On 05 Sep 2003 12:32:15 +0100 gregory mott <[EMAIL PROTECTED]> wrote: > > hi redhatters, > > > > fetchmail has a parameter for timeout, but apparently that parameter > > doesn't affect whatever timeout results in exitcode=2, socket error. > > > > i bet the relevant timeout is in the kernel, not fetchmail? > > > > this is happening alot when our dialup is busy with other things, like > > rsync, or up2date, or other traffic between lan and internet.. > > > > any idea where to cast the tweaking eye? > > Hi Gregory, > > The default keepalive values will let a connection persist > for over 11 minutes without an answer. If this is what is > causing your disconnects you have some _serious_ > congestion. Perhaps it's something else but you can > take a look at /proc/sys/net/ipv4/tcp_keepalive_* > > Also, from the fetchmail FAQ: > > Fetchmail is timing out during message fetches: > > > This is probably a general networking issue. Sending a "RETR" > command will cause the server to start sending large amounts of > data, which means large packets. If your networking layer has a > packet-fragmentation problem, that's where you'll see it. > > It also recommends disabling tcp_timestamps if you see > timeout problems: > > echo 0 > /proc/sys/net/ipv4/tcp_timestamps > > Good luck, > Sean
On Sun, 2003-09-07 at 19:40, gregory mott wrote: > ty for answering, > > i should have mentioned before, my previous experience with heavy dialup > traffic has shown that round trip time for pings can be longer than 15 > seconds for sure, possibly longer than 30. so i expect that i'm on the > hunt for some timeout that is not waiting long enough. > > also fetchmail exitcode=2 (socket error) means "An error was > encountered when attempting to open a socket to retrieve mail." so i > suspect there's some timeout somewhere relevant to opening a connection. > > so if anyone has an idea where to look.. > > tia, > -greg fwiw the following tweaks have made no difference: # cd /proc/sys/net/ipv4 # echo 60 >| ipfrag_time # echo 6000 >| inet_peer_maxttl # echo 6000 >| inet_peer_minttl # echo 0 >| tcp_timestamps -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
