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@xxxxxxxxxxxx>, relay=root@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@xxxxxxxxxxxx> Aug 22 14:02:11 borg postfix/qmgr[1499]: B4693A377C: from=<anne@xxxxxxxxxxxx>, size=7487, nrcpt=1 (queue active) Aug 22 14:02:11 borg sendmail[1711]: p7MD29Lf001711: to=anne@xxxxxxx, 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@xxxxxxx>, 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@xxxxxxxxxxxx> 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@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@xxxxxxxxxxxx>, 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 _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos