rickert@mp.cs.niu.edu (Neil Rickert) (01/18/91)
In article <BARNETT.91Jan17163141@grymoire.crd.ge.com> barnett@crdgw1.ge.com writes: >>>Unparseable user <RICHARD.RAGAN@CDCMAIL.svl.cdc.com> wants >>>to be <RICHARD.R.RAGAN@CDCMAIL.svl.cdc.com> > >Hmm. I have a similar error on our Ultrix machine. This usually >happens when mail comes in with the address > > user@machine > This problem is all too common. It is not caused by your machine, but by the machine which sent you the mail. A common cause is use of 'sendmail.subsidiary.cf' instead of 'sendmail.main.cf' when sending from a Sun or similar system. (Why does the default setup use the subsidiary version - sigh?) >What has to be done to make sure all Internet mail connections have >proper hostnames? What really has to be done is for system vendors to take more care in their default setup. As for what you can do, about the only solution I know of is to install the IDA version of sendmail. The current version - 5.65a+IDA-1.4.2 - uses the result of a nameserver lookup to convert user@machine to user%machine@sending.domain.name, on the assumption that the domain which directly sent you the mail probably knows the identity of 'machine'. -- =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*= Neil W. Rickert, Computer Science <rickert@cs.niu.edu> Northern Illinois Univ. DeKalb, IL 60115 +1-815-753-6940