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error sending out email from using Alias

Posted on 2013-05-15
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Last Modified: 2013-05-21
I setup a user to send an email using her alias email, and it works fine internally, but when I try a test to send an email externally, I get this error message:

Server error: '550 5.7.1 Unable to relay'

Any ideas how to fix this?
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Question by:afacts
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LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39170238
Is Alias@YourDomain.com the Primary email address on the user properties ?

- Rancy
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Author Comment

by:afacts
ID: 39170323
No, it's not the primary.   The primary is user@domain.com
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Author Comment

by:afacts
ID: 39172164
I'm sure there's a setting somewhere on my exchange server that doesn't allow pop3 emails to relay, it's just strange, I thought it would be built in.
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LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39173279
Ideally one can only send emails with Primary email of its own or anothers to send emails .... but receive on any that are assigned to him

- Rancy
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Author Comment

by:afacts
ID: 39173308
Well, then how come I send emails from the alias, but only internally, in my organization.
For example:
primary account is:  dan@domain.com
alias email is:  danalias@domain.com

So internally  I can send emails as danalias@domain.com, but I can't send them externally.

Now sure how to fix that.
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LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39173398
I am damn sure one cannot send from secondary email until someone has played around in ADSIEDIT or some other tool to try and make 2 Primary emails that way

- Rancy
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Author Comment

by:afacts
ID: 39173417
Well, I haven't done anything with ADSIEDIT.
I can send emails internally, my domain with the alias email, just not externally, so there has to be some exchange GURU's out there that would know the answer?????

Hopefully :)
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Accepted Solution

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Manpreet SIngh Khatra earned 500 total points
ID: 39173442
Yes you can have a secondary Mailbox\DL\PF and then assign them this Email and have SendAS rights on them and send from that address and if you want it back in your mailbox have set forwarding or Membership as what you decide initially to proceed with :)

- Rancy
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Author Comment

by:afacts
ID: 39173492
I'm a little lost from your post.  I'm not sure what you are trying to say?
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LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39173710
I am saying you have to have any other Mailbox with that secondary email your trying to use emails from to External users

- Rancy
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Author Comment

by:afacts
ID: 39185060
Thanks, I just created a new account, and gave the user full access to that account, and that works fine.  Perhaps exchange doesn't have the option to allow to send emails using an alias email address.
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Author Closing Comment

by:afacts
ID: 39185062
Thanks for the assistance!
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