Why does sendmail think its host is named `localhost' is it named?

[Kevin Darcy]

Looks like fairly standard sendmail boilerplate, I don't see anything 
that explains why sendmail would be confused over your hostname. Nothing 
unusual in your /etc/hosts either. sendmail is picking it up from 
somewhere in your system config, but I'm not really very familiar with 
your OS (Gentoo), so I can't really help you. You could trying asking on 
a sendmail or Gentoo list...

- Kevin


Harry Putnam wrote:

>Kevin Darcy <kcd at daimlerchrysler.com> writes:
>
>  
>
>>I'm not so sure this is even DNS-related. How is your sendmail.cf 
>>configured for name-resolution, e.g. does it look at the hosts file, 
>>and, if so, what does the "localhost" entry there look like? Is there 
>>are any explicit reference to localhost in sendmail.cf?
>>    
>>
>
>(/etc/hosts appears at the end)
>
>Thanks for the response... I've been pondering on this a while.  Where
>would such a thing be set in sendmail? There is no reference to
>localhost in /etc/mail/sendmail.mc, the configuration file, however to
>answer your question, yes there is in /etc/mail/sendmail.cf.
>But I built the sendmail.cf from my own sendmail.mc.  Where else would
>something like that occur?
>
>A brief look with line references would be:
>  grep -n -2 localhost /etc/mail/sendmail.cf
>
>63-# default LDAP map specification
>64-# need to set this now before any LDAP maps are defined
>65:#O LDAPDefaultSpec=-h localhost
>66-
>67-##################
>--
>73-#D{sendmailMTACluster}$m
>74-
>75:Cwlocalhost
>76-# file containing names of hosts for which we receive email
>77-Fw/etc/mail/local-host-names
>--
>663-
>664-# handle special cases for local names
>665:R$* < @ localhost > $*		$: $1 < @ $j . > $2		no domain at all
>666:R$* < @ localhost . $m > $*	$: $1 < @ $j . > $2		local domain
>667:R$* < @ localhost . UUCP > $*	$: $1 < @ $j . > $2		.UUCP domain
>668-
>669-# check for IPv4/IPv6 domain literal
>--
>1031-R$* u $* $| <@> < $* >	$: <?> < $3 >
>1032-R$* $| $*		$: $2
>1033:# handle case of @localhost on address
>1034:R<@> < $* @ localhost >	$: < ? $&{client_name} > < $1 @ localhost >
>1035-R<@> < $* @ [127.0.0.1] >
>1036-			$: < ? $&{client_name} > < $1 @ [127.0.0.1] >
>1037:R<@> < $* @ localhost.$m >
>1038:			$: < ? $&{client_name} > < $1 @ localhost.$m >
>1039:R<@> < $* @ localhost.UUCP >
>1040:			$: < ? $&{client_name} > < $1 @ localhost.UUCP >
>1041:R<@> $*			$: $1			no localhost as domain
>1042-R<? $=w> $*		$: $2			local client: ok
>1043-R<? $+> <$+>		$#error $@ 5.5.4 $: "553 Real domain name required for sender address"
>
>==============
>
>cat /etc/hosts (parred down):
>
>
>127.0.0.1	localhost       reader
>## ============================
>192.168.0.4     reader.local.net0      reader     # gentoo
>#===========================================================
>192.168.0.3     mob2.local.net0   mob2  # winxp (home)
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