John Hinton: > On 6/24/2011 11:34 AM, Benny Pedersen wrote: > > On Thu, 23 Jun 2011 13:33:11 -0400, John Hinton wrote: > > > >> We have no other issues with any other of 100s of clients on this > >> mailserver. Seems this is a direcpc problem? > > > > since its just one client, why do you think its your server problem ? > > > > have this client tryed rebooting ?, got a new virus ? > I really don't think it is my server, but as this is a satellite > connection, didn't know if there was a tweak I might be able to do which > helped with what appears to be a timing issue. Yes, it is one client and > all of their email accounts on all of their computers. So, I had them > reboot their modem/receiver and one of the computers with no success. Of > course, as usual, DirecPC tells them that there are no issues on their > system, so it falls back to me because I actually care about our clients. > > Oddly, yesterday afternoon it started working for them again, so it was > something at DirecPC... no changes here. I didn't know if anyone could > shed some light on this so I'd have something better to tell the client > to get them off my back and to maintain our trust factor. Unfortunately, > they are in a very rural area and satellite is their only option for > high speed (if you really want to call satellite high speed?).
Lost connection is a TCP-level problem. Postfix logging provides no TCP-level information besides the client IP address. To diagnose TCP-level problems, make IP-level recordings of sessions from that site. http://www.postfix.org/DEBUG_README.html#sniffer If you are comfortable with TCP, you can troubleshoot this yourself. Otherwise, contact me or Victor off-list. Wietse
