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You do not have permission to send to this recipient

My customer is having intermittent problems sending mail to a particular domain (i will call it supplier.com for this example), the mail usually bounces back about eight hours later, I think the message and problem is from the remote server but am not sure, the error is below

You do not have permission to send to this recipient.  For assistance, contact your system administrator.

            <mycustomers@domain.com #5.7.1 smtp;554 5.7.1 <user@supplier.com>: Relay access denied>

Any ideas

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Sid_F
Asked:
Sid_F
1 Solution
 
Sid_FAuthor Commented:
Ok, so is a smart host better to use than just sending direct by specifying external dns servers? what if the smart host goes down, is it possible to setup a backup smart host without having to create a new smtp connector?

Thanks
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
Don't follow the recommendations in that linked question because if you read through it you'll see that it's not the same situation as yours.

This NDR is caused by the recipient's server in most cases.  If the user can resend the message successfully, then that would further demonstrate that it's caused by the recipient's server.  Check with them.

Jeff
TechSoEasy

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Sid_FAuthor Commented:
ok, its a strange one so far using a smart host seems to have solved the problem although I will give it another while to see if there are any problems. Thanks
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
That's not strange at all... the recipient may have some type of email filtering software that rejected the message which came directly from the SBS rather than through the SmartHost... hence the popularity of using a SmartHost.

Jeff
TechSoEasy
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Alan Huseyin KayahanCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I will leave the following recommendation for this question in the Cleanup Zone:
    Accept: KCTS {http:#20020334}

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

MrHusy
 Experts Exchange Cleanup Volunteer
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Computer101Commented:
Forced accept.

Computer101
EE Admin
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