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451 qq temporary problem (#4.3.0)

Hi - Every 2-3 days I start to receive an error message from Norton when I send emails from my Windows Live Mail account saying:

451 qq temporary problem (#4.3.0)

This appears as soon as I click send and the message falls into my sent box but doesn't actually get sent.  I've contacted my outgoing email server provider (3 mobile) who tell me it's a problem with Norton.  After about 24 hours the problem seems to resolve itself but sure enough will reappear after a couple of days.  This problem only arises when I use my mifi whereby I use 3 mobile's outgoing servers to send my emails.  If I use another WiFi, the problem doesn't arise.  I don't change any settings, the outgoing mail port is 25.

Any ideas?!

Many thanks



Re: 451 qq temporary problem (#4.3.0)


   Welcome. Can you please turn off the outgoing email scan option in the Norton and then try to send the emails. Settings --> Network --> Message Protection --> Email Antivirus Scan Configure --> Remove the check mark next to Scan Outgoing Emails

--> Now send a test mail and check.

An user in here had solved a similar Problem by contacting his ISP.

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