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On Sun, 2009-07-12 at 15:06 +0100, Grant wrote: > > > > I would include the logs but can't for the life of me find them! I know > > that sounds silly, but when checking all the logs' timestamps immediately > > after I get the 451 error, none of them seem to be any newer. Not > > /var/log/mail* or /var/log/exim4/*. > > > > WRT DNS issues - essentially there are no connecting boxes. Almost > > without > > exception the only machine I use to send email through this machine is my > > laptop, and even then I do so with SSH port forwarding - I have laptop:25 > > forwarded to server:25, so as far as Exim should be concerned, it is > > receiving SMTP traffic from itself. > > > > As I said above, curiously the mail command will send fine. (I'm sending > > this via my Roundcube webmail interface which uses PHPMAIL, so I'd expect > > it to work OK). > > > > Any thoughts? > > Anybody got any ideas? All the Googling I'm doing seems to be pretty > fruitless - "it's a temporary problem, try again later" syndrome. > I'm jumping right in the middle here, so I have no idea what the original posting said. However, have you tried running exim with debugging cranked right up, and using a different port (so that it doesn't interfere with your normal mail)? I tend to use something like: exim -bd -oX 26 -d"+all" >/tmp/ex.file 2>&1 from one terminal session, then telnet in from a separate session using: telnet ... 26 and then enter your SMTP commands. When you get the 451 error issue a QUIT, then control-c the first session and look in the /tmp/ex.file. There will be lots of info in there, but you should be able to locate your 451 message, and see why it is occurring. (If you have a local firewall, or exim running though TCP wrappers, make sure port 26 is available.) John. -- --------------------------------------------------------------- John Horne, University of Plymouth, UK Tel: +44 (0)1752 587287 E-mail: John.Horne@xxxxxxxxxxxxxx Fax: +44 (0)1752 587001 -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html