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Receiving 550 bouncebacks for one user. How do I fix this?

Posted on 2008-06-18
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Last Modified: 2013-11-30
I'm receiving the following message:

The following recipient(s) could not be reached:
'youremail@email.com' on 6/18/2008 11:50 AM
550 No such domain at this location (youremail@email.com)

We host the e-mail and domain of the user that's having this problem.
Everyone except user 1 on this domain can send to anyone just fine.
User 1 can send within her own domain but cannot send to anyone outside of her domain.
We also have a Barracuda Spam Firewall. I've added user 1's e-mail address to whitelist and valid domain recipients. This is what we do for each user.
The Barracuda logs the emails as Invalid Recipient and doesn't send them.

Can anyone help me?
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Question by:OpacityZero
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5 Comments
 
LVL 9

Expert Comment

by:authen-tech
ID: 21816134
Check their outgoing mail settings in outlook.  I had this happen with a customer whose outbound email was being sent to the default mail.domain.com when we were supposed to have them on the smtp.verizon.net with the authentication put in.

Also check to see if that user has any software firewalls installed that may be blocking port 25.
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LVL 9

Expert Comment

by:authen-tech
ID: 21816154
I also had a user with two email accounts...one personal and one work.  They were trying to send mail to the global address list on the domain from their personal account.  Check to make sure nothing like that is happening as well.
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Author Comment

by:OpacityZero
ID: 21816157
I checked the outgoing mail server and whether the authentication was correct. There are other users in the same office that have working e-mail addresses from the same domain. Everything looks good in that respect.
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LVL 9

Accepted Solution

by:
authen-tech earned 2000 total points
ID: 21816242
Someone else had this problem (with everyone, not just one user) and also had a barracuda...here's what they posted:

"Resolved! Turned out it was the Barracuda device, by default it disables any kind of email relaying out of the box. We left most of the default options enabled on it. I enabled relaying for everyone sending from the domain and all is well."

Maybe check that user's permissions to send from port 25 or 465 (secure)

Also check the firewall / spam filtering settings for that user.  You could try deleting the email account in outlook and reset it up to be sure all the settings are correct.
0
 

Author Comment

by:OpacityZero
ID: 21816284
Thanks authen-tech,

I added the e-mail address to outbound relay whitelist and it worked fine.
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