SMTP just not working, and bind is going out

Over a month ago I got a dedicated server from servermatrix.net, and for some reason - half of the domains' SMTP doesn't work, and bind seems to be randomly going out (Sometimes, some people - just can't access a domain on the server... Wait x minutes, refresh - and they can).

I have no idea how to debug this, as POP3 works fine - and SMTP works fine on SOME domains, but not on the ones that need to have it working.

Does anyone have a CLUE, on how to debug either of these problems? Because both myself, and my sys-admin - are scratching our heads.



Correction: It seems that SMTP works fine from squirrelmail, but refuses to work in Opera; I've played around with the Auth-methods, and some of the domains (On the same server), are using the same auth-methods as the broken ones; yet they work and the broken ones... don't.

Now the strangest part of this is... Other people on the server, who don't use Opera, are having the same problem - yet sending the e-mail from /webmail, works fine.

This is really peeving me off, there are some important e-mails that have been "queued" in Opera for over a month - even if I re-write, and re-send - they go into queue; the other domains work, but the two that I NEED to work, don't.

 

 

 

 

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