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exchange mail box unavailbale when getting email from external domain

Posted on 2006-07-11
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Last Modified: 2008-01-09
Hello,
we have a user and he has 2 SMTP addresses. He receives internal email without any problem on both addresses. But wehn it comes to email from external domains he  can get them when sent to the secondary smtp address but when it comes to the primary smtp the sender gets an NDR "mailbox unavailbale"
I have tried to recreate the first SMTP address but it didnt do the trick.

Is there anything else i can do before i tell the user to change his email address ?? (just kidding...)

Thanks,

and P.S because this user belongs to the category of the "obnoxious users" a quick repsonse would be appreciated.

Nick.
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Question by:c_hockland
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16 Comments
 
LVL 104

Expert Comment

by:Sembee
ID: 17083160
Do you know which machine is generating that "mailbox unavailable" message? Is it Exchange or something else?
Are there any other users using this domain? Can they receive email on that domain correctly?
Does email come in directly, or through another server?

Simon.
0
 

Author Comment

by:c_hockland
ID: 17083184
1. yes i know which machine generates the error message
2. it is exchange server 2003
3. i have many users in this domain 800 and this user cannot receive email from any external domain i.e hotmail or yahoo
4. It goes via surfcontrol first

he can receive email to his secondary address
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LVL 104

Expert Comment

by:Sembee
ID: 17083240
How far is the message getting? Is it getting through the surfcontrol box?

By domain, you do know that I meant SMTP domain, not Windows domain.

Simon.
0
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Author Comment

by:c_hockland
ID: 17083262
the email is getting to the surfcontrol box but we are not sure if the IMS is replying back to the surfcontrol or the surfsontrol cannot find the email box.
yes we have many users in the smtp domain , but we only have this problem with one address.
0
 
LVL 104

Expert Comment

by:Sembee
ID: 17083288
Anything "funny" about the email address? Could it be interpreted as a system command?
If you put another email address in the same SMTP domain on the account, does that work?

Simon.
0
 

Author Comment

by:c_hockland
ID: 17083299
no it is a plain smtp address.

2. if we put a second email address on this smtp domain it does work just fine.

0
 
LVL 104

Expert Comment

by:Sembee
ID: 17083310
That address hasn't been blocked anywhere?
Recipient filtering in Exchange, something like that?

Simon.
0
 

Author Comment

by:c_hockland
ID: 17083343
Simon,
everything is clear on the recipient filtering in enxchange
0
 
LVL 104

Expert Comment

by:Sembee
ID: 17083354
If you remove the email address from the account, leave the domain a while to replicate the removal, then try and send an email to the account from outside, do you get the same error message?

Simon.
0
 

Author Comment

by:c_hockland
ID: 17083801
let me try that Simon and will let you know in a few secs.
0
 

Author Comment

by:c_hockland
ID: 17083954
ok i renamed the smtp and tired to send another email and still got the same message. Should i try to delete it completely now and try to send an email ?
0
 

Author Comment

by:c_hockland
ID: 17084444
ok , we deleted the smtp totally, and then we sent an email and we still got the same error...
0
 
LVL 104

Expert Comment

by:Sembee
ID: 17084476
That means it isn't Exchange blocking the address.
If Exchange was blocking it, then you would get a user unknown message.
What sort of logging is on that other device? Turn it up if there is any and see what is happening there.

Simon.
0
 
LVL 104

Expert Comment

by:Sembee
ID: 17084487
Also - confirm that user unknowns are being handled correctly. Send an email to an address you know doesn't exist on the Exchange server. It should bounce back.

Simon.
0
 

Author Comment

by:c_hockland
ID: 17084756
Simon ,
this account used to exist in the past 5 months ago. It got deleted and now the user is back so the accunt has been recreated. The previous account was totally removed from AD.
Does it help ????
No ligging tool on Surfcontrol. We can see that the message was received by Surf control but was denied b/c the mailbox was unvailable. Thats the best info we get from the log.

If we send an email to an non existing account , yes, we get the email bounced back. (also it says mailbox unavailable)
0
 
LVL 104

Accepted Solution

by:
Sembee earned 2000 total points
ID: 17084977
Mailbox Unavailable is NOT an Exchange message.
If it was Exchange bouncing the message back then it would come back with "User Unknown".

Is this Exchange 2003 on Windows 2003? If so, do you have filter unknown recipients turned on?

Simon.
0

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