On Tue, Jan 13, 2004 at 09:08:32PM -0700, Rommel B. Ikeda wrote: > Hi, > > I do not know if the "Subject Name" was the right one for it...because I really do > not know what is going on... > > I have been seeing this message... > > 554.5.3.0 host "localhost" unknown: Invalid Argument > Jan.... IBM-R40e sm-mta [417] NOQUEUE:SYSERR (root)"localhost" unknown: Invalid > Argument
Sendmail is trying to convert the hostname 'localhost' into an IP number. Not being able to do that is not good. You should have at least an entry for localhost in your /etc/hosts: 127.0.0.1 localhost You might also have the IPv6 equivalent: ::1 localhost and having the same information available from the DNS is quite handy: % host localhost. localhost has address 127.0.0.1 localhost has address ::1 localhost mail is handled (pri=5) by localhost Note: you will also tend to have entries for 'localhost.your.domain.com' -- these are fine, but not as important as the straight 'localhost' entries. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK
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