kocks@jessica.stanford.edu (Peter Kocks) (12/04/90)
Hi, I have a machine called "d31jr0" which I want to alias to the name "cumulus", because d31jr0 is such a silly mail name. The official hostname is d31jr0, but I already have an IP alias "cumulus" for this machine. I can ftp and telnet (ie use IP) from any machine in the world to "cumulus". However, when I send mail strange things happen. For most of the the western United States sending mail to "cumulus" works. Somewhere along the line a machine will substitute "d31jr0" for "cumulus" in the address. So, despite being sent to "cumulus" the mail is received as if it were sent to "d31jr0". Go east of the Mississippi and the mail bounces with the classic "host unknown". I believe the problem is with the sendmail.cf on d31jr0. Can anyone tell me how to get the sendmail to accept messages to "cumulus" and "d31jr0"? BTW d31jr0 is a dec 3100 running ultrix 3.1 Thanks Peter Kocks kocks@jessica.Stanford.EDU
Craig_Everhart@TRANSARC.COM (12/04/90)
What's this ``cumulus''? ``cumulus.stanford.edu''? Where did you make the ``IP alias'' for this machine? If ``cumulus'' is a CNAME for d31jr0 (all in the proper domain and fully qualified), it will all work fine. And because domain names in mail headers are supposed to be the ``real'' name and not some silly CNAME or nickname or abbreviation, the machine that's doing the substitution is playing by the correct rules. Of course, your sendmail.cf will have to recognize mail to both host names as local. Craig