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553, Sorry your envelope sender has been denied

We have problems sending emails to a particular domain.  When we send to an email to the norgren.com.br domain, we get:

The recipient name is not recognized

The MTS-ID of the original message is: c=US;a= ;p=Exchange;l=LAYLA-040414130848Z-242936

MSEXCH:IMS:Exchange:Littleton:LAYLA 3553 (000B09AA) 553 sorry, your envelope sender has been denied (#5.7.1)

I have telneted to their mailserver, and get the following:

220 mail.example.com ESMTP
mail <xxxxxxx@usa.norgren.com>
250 ok
rcpt <xxxxxxx@norgren.com.br>
553 sorry, your envelope sender has been denied (#5.7.1)

Using any other "mail" address, it works.  See below:

mail <xxxxxxx@hotmail.com>
250 ok
rcpt <xxxxxxx@norgren.com.br>
250 ok

Any idea what could be happening since it appears at their end?



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norgrenit
Asked:
norgrenit
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1 Solution
 
Mob-bomCommented:
Spam filter on their end.  Can you ask them to white list your domain?
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norgrenitAuthor Commented:
Our IT contact in Brazil said he added our domain to their "whitelist" but I am still getting the same error when I send an email.
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Mob-bomCommented:
How long ago?  Depending on the software they use, it could need to filter down or require a reboot or restart of services.  
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norgrenitAuthor Commented:
I suppose within an hour.  I'll wait and try again.  If it doesn't work then, I'll see if they can reboot before they go home.  I'll give an update later.
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norgrenitAuthor Commented:
Mob-bom,
They are using POP3 and we are in the process of seeing if the provider is doing some type of restrictions.
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Mob-bomCommented:
Nod, sounds plausible if their ISP uses a spam filter.  You may want to check to see if for any reason your domain name got blacklisted.  http://directory.google.com/Top/Computers/Internet/Abuse/Spam/Blacklists/
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norgrenitAuthor Commented:
Mob-bom,
Our domain did exist on Brazil's whitelist....they overlooked it the first time.  Emails are now going through.  Thanks for your help...look for the points!
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Mob-bomCommented:
Glad to have helped and thanks :)
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