Ian Eiloart
Tue, 16 Mar 2010 04:35:27 -0700
--On 12 March 2010 18:54:52 +0000 exim...@riotm.co.uk wrote: > I'm not green with mail servers, but this one is new to me: > > 550 Sender address belongs to a non-trusted organisation [macl] > > I'm told it's Exim but I'm not sure of the cause. It is given at the > rcpt to stage and I'm suspecting some kind of acl from the message. It's a custom message. It says that it's rejected the message because it doesn't like the sender address, presumably the domain. The implication is that only senders from trusted organisations are accepted for the recipient. We have a rule like that for our ticket tracking software, for example. It's common to ignore the sender address until RCPT TO, in case the recipient is postmaster. So, you could email postmaster@ and ask the question there. > Can anyone suggest a reason or further reading? -- Ian Eiloart IT Services, University of Sussex 01273-873148 x3148 For new support requests, see http://www.sussex.ac.uk/its/help/ -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/