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Exchange user can not send external mail

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by aaron_wurthmann 2 views

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I have user, just this user, no one else. That can not send external mail, internal is fine, but external is not. I have deleted and recreated his mail, but I have a feeling that it has more to do with the setup of this Exchange server and or his account (he is POPing his mail). I inherited this Exchange server (Exchange 5.5 SP4) I have been on 2000 for awhile now so I am a tad rusty and out of place. I figure maybe it is a relay issue, but the user just receives a non-deliverable mail back. Something to the tune of ?This is recipient was not reachable?. In any case I can?t find the settings for realying. omg I feel like a noob please help.

*posted in multiple forums*

3 replies

by jordana

It is probably a closed relay (this is a good thing (tm) ).

On the client check what the SMTP server is. Make sure it is pointed to your exchange box, and make sure that you check the SMTP server requires authentication and use the same credentials as pop.

Hope this helps, if you need more info let me know.

by aaron_wurthmann

Yeah it was relaying and the settings are under IMS routing. The reason I missed this was that this is the first Exchange server I have seen with a hole pnched in from the outside. I always have a mailspool setup and only allow the spool to talk to the Exchange server on port 25 then I leave the default setting for relay turn on for the POP users. Oh well I suppose this is a better setting than just full blown on.

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