Ah ha! Thanks it was the relay-domains file. Thanks Paul. Neil. On Thu, 2004-10-28 at 12:07, Paul Howarth wrote: > Neil Marjoram wrote: > > I have a small problem with my sendmail config. I am sure I have missed > > something, but I just can't see what. > > > > I currently have a solaris system running sendmail, and that works fine. > > I copied the configs from that system and started up sendmail. The new > > FC2 system happily sends mail to our mail hubs, but when it receives a > > message it just sends it back to the mail hub. > > This is usually a case of the system not recognising its own domain name. > > > I've done a few tests and found that it will accept and deliver mail to > > a local user and a local mailing list, however if I send a mail to > > any_mail_address@xxxxxxxxxxxxxxxxxx it just sends it to the mail hub > > (which sends it back and we get in an eternal loop). > > So mail generated on your local machine is handled properly, but incoming mail > is forwarded to the hub? > > > I have set all my locahost host names in local-host-names. > > That's good. > > > I have put adastral.ucl.ac.uk in relay-domains > > Why? You aren't relaying mail for that domain, you're treating it as local. > You do have adastral.ucl.ac.uk in local-host-names don't you? > > > My aliases file is straight from the Sun box so it works ok. > > > > I have set : > > > > MASQUERADE_DOMAIN(adastral.ucl.ac.uk)dnl > > MASQUERADE_AS(`adastral.ucl.ac.uk')dnl > > > > In the sendmail.cf. > > I guess you mean sendmail.mc ;-) > > > The last thing in my config which is a little strange is the MX records > > for my domain point to the mail hub and not to my server, this is to > > allow all mail from external addresses to pass through a central mail > > hub before being delivered to local mail servers. This does however work > > fine with the Solaris system. > > That's fine as long as the mail hub knows to forward mail for your domain to you. > > Could you post the entire sendmail.mc? > > Paul. -- Neil Marjoram. Systems Manager University College London Adastral Park Campus Martlesham Heath Ipswich Suffolk IP5 3RL