Xref: utzoo comp.mail.misc:1101 comp.mail.uucp:1459 comp.mail.sendmail:4 Path: utzoo!attcan!uunet!lll-winken!ubvax!ames!ucsd!brian From: brian@ucsd.EDU (Brian Kantor) Newsgroups: comp.mail.misc,comp.mail.uucp,comp.mail.sendmail Subject: Re: routing problem with sendmail/smail Keywords: mail,smail,sendmail,route Message-ID: <1028@ucsd.EDU> Date: 13 Jul 88 18:50:10 GMT References: <589@ndcheg.cheg.nd.edu> <374@eve> Reply-To: brian@ucsd.edu (Brian Kantor) Organization: UCSD Academic Network Operations Lines: 44 What we do at UCSD is: All mail leaving here has a return address that looks like this on the internet: user%campushost@UCSD.EDU on the uucp network ucsd!campushost.ucsd.edu!user Mail addressed as wombat!user will be delivered to the campus host 'wombat.ucsd.edu' if there is such a host, otherwise it will be routed via the uucp maps to wherever wombat is. user@wombat will be delivered to the campus host 'wombat.ucsd.edu' if there is such a host, otherwise it will be returned as undeliverable. user@wombat.ucsd.edu ditto user%wombat@ucsd.edu ditto user@wombat.uucp will be delivered via the route derived from the uucp maps regardless of whether is a campus host named 'wombat' or not. user%wombat.uucp@ucsd.edu ditto In other words, we're treating '.uucp' as an explicit domain that is NOT our local domain, and we're treating '!' as a pseudo-domain-specification that implies that the uucp domain should be tried if a host is not found in the local domain. This works really well for us. If you want a copy of the incredibly baroque sendmail.cf file that does all this, it's available via anonymous FTP from host UCSD.EDU (128.54.16.1) on the Internet. BTW, we use 'uumail' as a sendmail post-processor to do the uucp routing. Smail was too broken at the time we set this whole thing up to even consider using it, and I don't like to change a working system. Brian Kantor UCSD Postmaster UCSD Office of Academic Computing UCSD B-028, La Jolla, CA 92093 USA brian@ucsd.edu BRIAN@UCSD ucsd!brian