[CentOS] Not receiving root mail

[Anne Wilson]

On Monday 22 Aug 2011 13:12:54 Always Learning wrote:
> Once your email is out on the Internet is needs a genuine Internet email
> address. xxx.lan is known only to your internal system and it is not an
> Internet email address.
> 
Exactly - and my problem is knowing where it is getting this from.

> Care to show the headers of your outgoing email ? (cover-up the bits you
> want to keep private)
> 
Not sure where I can find the outgoing mail but I can give more info that might 
help.

It's a long story, but probably relevant, so -

We first set up a family LAN around 12 years ago, and called it xxx.net.  
Eventually I realised that xxx.net was actually a TLD name, so not a good 
idea.  Actually I now own both xxx.org and xxx.net, but I decided that with 
this install I'd correct what had long been our practice.

On the new CentOS install I set the server name to borg.xxx.lan.  I then 
changed every reference to xxx.net in /etc/hosts, and set about changing the 
Postfix config files.  (I know now that it is using postfix.sendmail,)  Somewhere 
I either have some other file still pointing to the old name, or, more likely, 
postfix is still using it somewhere.

I have been careful to re-map transports and restart postfix after any changes 
to the config files.  The following from maillog may shed some light as to where 
the problem lies:

Aug 22 14:02:11 borg sendmail[1711]: p7MD29Lf001711: from=anne, size=6877, 
class=0, nrcpts=1, msgid=<201108221302.p7MD29Lf001711 at borg.xxx.lan>, 
relay=root at localhost
Aug 22 14:02:11 borg postfix/smtpd[2067]: connect from borg.xxx.net[127.0.0.1]
Aug 22 14:02:11 borg postfix/smtpd[2067]: B4693A377C: 
client=borg.xxx.net[127.0.0.1]
Aug 22 14:02:11 borg postfix/cleanup[2070]: B4693A377C: message-
id=<201108221302.p7MD29Lf001711 at borg.xxx.lan>
Aug 22 14:02:11 borg postfix/qmgr[1499]: B4693A377C: from=<anne at borg.xxx.lan>, 
size=7487, nrcpt=1 (queue active)
Aug 22 14:02:11 borg sendmail[1711]: p7MD29Lf001711: to=anne at xxx.org, 
ctladdr=anne (500/100), delay=00:00:02, xdelay=00:00:00, mailer=relay, 
pri=36877, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as 
B4693A377C)
Aug 22 14:02:11 borg postfix/smtpd[2067]: disconnect from 
borg.xxx.net[127.0.0.1]
Aug 22 14:02:12 borg postfix/smtp[2071]: B4693A377C: to=<anne at xxx.org>, 
relay=mailhost.zen.co.uk[212.23.3.98]:25, delay=0.43, 
delays=0.09/0.02/0.15/0.18, dsn=5.0.0, status=bounced (host 
mailhost.zen.co.uk[212.23.3.98] said: 550-Verification failed for 
<anne at borg.xxx.lan> 550-Unrouteable address 550 Envelope Sender: Domain must 
resolve in DNS! (in reply to RCPT TO command))
Aug 22 14:02:12 borg postfix/cleanup[2070]: 2EB94A371B: message-
id=<20110822130212.2EB94A371B at borg>
Aug 22 14:02:12 borg postfix/bounce[2072]: B4693A377C: sender non-delivery 
notification: 2EB94A371B
Aug 22 14:02:12 borg postfix/qmgr[1499]: 2EB94A371B: from=<>, size=9481, 
nrcpt=1 (queue active)
Aug 22 14:02:12 borg postfix/qmgr[1499]: B4693A377C: removed
Aug 22 14:02:12 borg postfix/smtp[2071]: 2EB94A371B: to=<anne at borg.xxx.lan>, 
relay=mailhost.zen.co.uk[212.23.3.98]:25, delay=0.75, delays=0.04/0/0.16/0.54, 
dsn=2.0.0, status=sent (250 OK id=1QvU8e-00085m-9o)
Aug 22 14:02:12 borg postfix/qmgr[1499]: 2EB94A371B: removed

The old transport read:

xxx.net	local:
.xxx.net	local:
*	smtp:[mailhost.zen.co.uk]
.*	smtp:[mailhost.zen.co.uk]

Those lines have been left and 

xxx.lan	local:
.xxx.lan	local:

added in.

A more likely suspect, I think, is main.cf - the relevant lines in the old one 
being 

mydestination = $myhostname, localhost.$mydomain, $mydomain, xxx.lan
myhostname = borg.xxx.net
mydomain = xxx.net
myorigin = $mydomain
masquerade_domains = $mydomain
#masquerade_domains = |borg.xxx.net
mynetworks = 192.168.0.0/24,127.0.0.0/8

and the latest version (after many thrashing edits)


mydestination = $myhostname, localhost.$mydomain, $mydomain, xxx.lan
myhostname = borg
mydomain = xxx.org
myorigin = $mydomain
# masquerade_domains = $mydomain
mynetworks = 192.168.0.0/24,127.0.0.0/8

Sorry this was so long, but it seemed important to give you as much info as I 
could.

Anne