POP3 Connector cant deliver mail to specific user

databoks
databoks used Ask the Experts™
on
Hi.
To cut a long story short, we have a SBS2003 with an exchange server, which fetches e-mails from our mail host through the POP3 Connector and into a user account.
This user account is used by several employees in their outlook clients, to read and write e-mails.
In the exchange system manager, we can see that the user account mailbox holds around 37.000 mail objects, with a size of 4GB´s.

The problem is, that when we try to send an e-mail outside the company, it reaches the pop3 connector, which cannot deliver it to the user. Afterwards, the mail sender will receive an e-mail from the postmaster, saying that it could not be delivered.
If we in the POP3 Connector try to forward the e-mail to another account, the e-mail goes straight through without any problems.
We have tried with a 3. party POP3 connector, but with the same results. It says that the user account is invalid.

Any help would be appreciated!
Thank you.

Kind regards,
Lars
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so it sounds like the particular pop account has reached it's limit..

If it is with your ISP, it might be time to get into their webmail and clean it all out..
And check your settings within exchange that you havn't hit the mailbox limit to prevent sending, although it appears to be receiving still, so you may be in the middle of the thresholds.
Goto Exchange system manager -> Administrative Groups -> Your server -> First Storage Group, then right click the Mailbox Store and select properties, exchange limits are here..

limits.JPG
Alan HardistyCo-Owner
Top Expert 2011
Commented:
The POP3 connector is used to receive mail.
You mention that 'when we try to send an e-mail outside the company, it reaches the pop3 connector, which cannot deliver it to the user' - sending of mail does not use the POP3 connector - the SMTP connector is used to send out emails.
'Afterwards, the mail sender will receive an e-mail from the postmaster, saying that it could not be delivered' - this is normal behaviour for a non-deliverable email.
What exactly isd your problem?
Is the problem sending mail to a particular user?
Is the problem receiving mail and having it forwarded to a particular user?
Is it both?
Have you checked the default email address of the problem user - it may be setup incorrectly?

Author

Commented:
Hi, and thank you for your replies.

There are no defined limits in the Mailbox store.

What i meant was, when we try to send an e-mail from the outside, to the e-mail adress located on the exchange server, it fails, and returns the postmaster message to the sender. There are no issues when it comes to sending mail from the user, internal or external.

So the problem is sending mail to this particular user.
As far as i can see, there are no user setup problems.
Alan HardistyCo-Owner
Top Expert 2011
Commented:
Have you also checked the Users MailStore Limits - they can be set individually.
Open up Active Directory Users and Computers, locate your user.  Right-click their account and choose properties.
On the Exchange General - click on the Storage Limits button and check that there are no restrictions set there.

Author

Commented:
Yes, I have also checked that.
But the problem is "solved" now. I created a new user account, redirected the mails to this new account instead, and updated the outlook clients with this new account.

Thank you for your help :)

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