I am using Windows XP Pro with Microsoft Outlook 2003 (11.5608.5606).

Everything has been fine until last week when I noticed emails I am sending
are not being received.

This is to any address not just one inparticular, and have also tested this
with other personal email addresses of my own. I tried attaching delivery
receipts and not one has come back.

It is not a problem with the domain or isp as everything works perfectly if
I send it using webmail.

It is not a problem within the settings as I have more than one email
account set up in outlook for different domains and it is only this 1 that is
not working. All others are perfect.

I have tried disabling the firewall, the email antivrus scanner, all anti
spyware, and the entire AV program which has made no difference.

I have triple checked the outgoing server details and these are fine (and
match those of the working email accounts).

Any ideas, this is driving me mad and I am missing a lot of opportunities
dur to emails not getting through

RonaRoux wrote:

It is not a problem with the domain or isp as everything works
perfectly if I send it using webmail.

This is not a valid conclusion.

It is not a problem within the settings as I have more than one email
account set up in outlook for different domains and it is only this 1
that is not working. All others are perfect.

Have you enabled diagnostic logging to see what's happening?

I have tried disabling the firewall, the email antivrus scanner, all
anti spyware, and the entire AV program which has made no difference.

Did you uninstall the AV program and reinstall it without the email
integration? Many AV programs require this despite showing the mail
scanning as disabled.
--
Brian Tillman

The problem you describe is hard to understand correctly.

I have to assume that the profile you're using (the one that doesn't work)
_used_ to work fine, but now it doesn't? Is that correct?

Given your problem description, it sounds as though your messages aren't
even getting to the mailserver when you use that profile, and the mechanism
for connecting to the server shouldn't "change" within a profile without a
logical explanation.

The simplest way of telling what's wrong is to go to the account settings
dialog (Tools|Email Accounts|Change Accounts|Change) and click the "Test
Settings" button - this will tell you precisely where the problem lies. It's
not the clearest tool in terms of telling you *what* the problem is, but it
will tell you *where* the problem is!

The type of connection you're using to the server - IMAP, POP, HTTP, etc, is
really important. If you're using a POP server, for example, you need to
check your login settings on the POP server parameters page, which you can
only get to using the "Advanced" button on the Settings dialog.

The fact that webmail works is totally irrelevant to the problem you're
describing - it's a different mechanism on a completely different computer
(that'd be like finding that your car won't start one morning and you tell
the mechanic that it's not a problem with your battery because your
neighbour's car starts just fine

So first, try the "Test Settings" button, and see if that helps you find
where the problem is, and take it from there. I suspect that once you test
the connection, the "aha!" factor will take over. I'd be interested to know
where the problem was!

I hope this helps a bit. Other, smarter, people may be more helpful!
--
Data is not Information; Information is not Knowledge; Knowledge is not
Wisdom.