Re: [courier-users] Difficulty sending mail via Courier from Mutt on Ubuntu 8.04.1 - Sam Kuper - net.sourceforge.lists.courier-users

10 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Difficulty sendin...

From	Sent On	Attachments
Sam Kuper	Oct 25, 2008 4:59 pm
Jérôme Blion	Oct 25, 2008 5:19 pm
Sam Kuper	Oct 25, 2008 6:17 pm
Sam Kuper	Oct 25, 2008 7:08 pm
Sam Kuper	Oct 26, 2008 5:14 am
Sam Varshavchik	Oct 26, 2008 6:58 am
Tim Lyth	Oct 26, 2008 7:35 am
Sam Kuper	Oct 26, 2008 9:04 am
Sam Kuper	Oct 26, 2008 9:18 am
Gordon Messmer	Oct 26, 2008 11:24 am

Subject:	Re: [courier-users] Difficulty sending mail via Courier from Mutt on Ubuntu 8.04.1
From:	Sam Kuper (sam....@uclmail.net)
Date:	Oct 26, 2008 9:04:12 am
List:	net.sourceforge.lists.courier-users

2008/10/26 Tim Lyth <tc...@tcl.homedns.org>:

I most certainly don't mind - I thought I'd changed the To: field to be the list - whoops.

Thanks :)

Yes, the 504 line is the significant line in all that output - I think your server doesn't know who it is.

Hmm, interesting. I haven't come across this situation before.

What do (assuming config files in same location on yours as they are on mine) /etc/courier/defaultdomain and /etc/courier/me have in them?

$ cat /etc/courier/defaultdomain shelleysoldbox

$ cat /etc/courier/me cat: /etc/courier/me: No such file or directory

/etc/courier/defaultdomain is what is added after the @ if nothing is there already. /etc/courier/me identifies to courier who is it - I think this is used in the SMTP HELO/EHLO greeting and response. If /etc/courier/me doesn't exist, then I think courier reverts to the output from `hostname`.

$ hostname shelleysoldbox

If nothing gives courier a FDQN then you'll get that error.

On my system, /etc/courier/me has "tcl.homedns.org" as that's my domain, output from `hostname` is "five-hundred.tcl.homedns.org" (LAN name appended in front of the domain). When I telnet in to my email server with /etc/courier/me present, I get "220 tcl.homedns.org ESMTP" as the first message from courier. When I move /etc/courier/me out of the way (eg: mv me ~ ), I get "220 five-hundred.tcl.homedns.org ESMTP".

In your instance, I'd set /etc/courier/me (or equivalent) to be the domain name.

The other possibility is the email address that it appears to be coming from - sam@shelleysoldbox - that's not a valid email address as it's not an FQDN after the @.

I think that's what's happening: the email appears to be coming from sam@shelleysoldbox.

Might need to set up some internal DNS system (or /etc/hosts if you've got a small number of systems) to resolve LAN IP's in to FQDNs - this will mean that your email client (as well as courier) will have an FQDN for every system it will speak to.

Thanks. I think you're probably right about this.

So far, I've tried editing /etc/hostname to read, 'shelleysoldbox.mydomain.dyndns.org', restarting /etc/init.d/hostname.sh and /etc/init.d/courier-mta . I'm still having the same problem as before, and from the logs, it looks like Courier is still trying to send the mail from sam@shelleysoldbox rather than sa...@shelleysoldbox.mydomain.dyndns.org so I guess I'll have to do some further configuration to get things working.

The weird thing is, with the other Ubuntu server I have, none of this has been a problem. It seems to be fine sending email without a FQDN.

All further suggestions still very much welcome!

Thanks again,

Sam

HTH again, Tim Lyth

Sam Kuper wrote:

Hi Tim,

I hope you don't mind that I've taken the liberty of copying your reply back to the list.

2008/10/26 Tim Lyth:

You should also have /var/log/mail.log and maybe /var/log/mail.err. `tail -n50` those - that'll at least show you a bit more history of what's been going with email. AND that might give the clue needed - especially if you have a timestamp for when the email was sent via mutt.

<snip>

id=00027AE8.4904593F.000031D0,from=<sam@shelleysoldbox>,addr=<sam....@uclmail.net>: 504 Need Fully Qualified Address Oct 26 11:49:21 shelleysoldbox courieresmtp: id=00027AE8.4904593F.000031D0,from=<sam@shelleysoldbox>,addr=<sam....@uclmail.net>,status: failure <snip>

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