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Steve Smith wrote: > > Ahh, thanks! Excuse my lack of knowledge, but does that only affect > email, or other services on teh server as well? www.nonexistence.co.uk > is being served off the same machine, if that's any help with fault-finding. Hard to know - probably all incoming TCP connection. It might affect outgoing. > I'll forward this on to someone who knows more about postfix than I do, > who helped me set the mail server up, and I'm sure he'll be able to > point me in the right direction. It is TCP/IP networking, not email. Most likely cause, not updating IOS on a CISCO router since 2001 ;) Other causes - over aggressive firewalling in consumer routers. Simon -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html