Outlook 2011 – Server Error: 550 #5.1.0 Address rejected

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Hello all!

Recently I bought a replacement computer (old one burned down… literally) and bought with win7 MS Office 2011 Pro including Outlook. I have to use Outlook for schedule and meeting purposes. But it does not work well as I expected. Outlook 2011 displays – 550 error

But the problem emerged only when I try to "reply" to or "forward" an email. I get the following error statement:

"The following recipient(s) cannot be reached:
(the addressee's email alias shown here on 24/03/2011 3:23 PM
Server error: '550 #5.1.0 Address rejected.'

Don’t found any in-correct after checked and rechecked the address.

The address is retyped without the alias.
The email is pinned with an outgoing email.
All is done, but result is zero. I think it is may be that the IT guy who installed all the programs missed, but I am not sure if I can find it.

Can anyone give me any idea?

Thanks

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Answered By 557260 points N/A #92469

Outlook 2011 – Server Error: 550 #5.1.0 Address rejected

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Error 550 in Microsoft Outlook is a relay error. This happens when the domain of the message’s address is not processed by the SMTP (Simple Mail Transfer Protocol). The domain is the name after the “@” symbol in an email address.

When sending an email, in order for it to be sent and received successfully on the other end, the SMTP server needs to connect to another SMTP server to relay or send the message.

That’s why if your SMTP can’t process the address of the message it will not be able to send the message to the SMTP server. The process is cut there.

This problem usually happens in a new installation of the software or an upgrade that is made. The actual cause of this is an installation with incorrect configurations or an incomplete installation of the application. You need to do some changes in your SMTP’s settings.

  1. Click Server.
  2. Click Tools/Accounts/Properties.
  3. Click Server then open Account name.
  4. Check My Server Uses Authentication then click Settings.
  5. Type your account name and password and then click OK, Next then Finish.

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