"The server responded: 550 5.3.4 Requested" error with Outlook 2010 SP1

Hi
I set up an outlook.it account in Outlook 2010 SP1 64-bit to receive and to send E-Mail via POP3. Now, when I test this account, Outlook displays this SMTP error:
The server responded: 550 5.3.4 Requested
How come?
Thanks
Bye
Balubeto

Hi Balubeto,
This error occurring because your account has blocked and in such scenario, you should firstly contact to your ISP (Internet Service Provider). Also check and use the accurate
SMTP authentication so you can connect with your ISP or mail server.
For more about 550 5.3.4 Requested,
take the help from the given link: http://office.microsoft.com/en-us/outlook-help/troubleshoot-550-553-and-relay-prohibited-errors-HA001112833.aspx
Note: Improve community discussions by marking the answers helpful.
Thanks
Clark Kent

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