SMTP Error Code 550-OU-002

Unanswered 0 answers Asked Oct 22, 2013

Archived post from October 22, 2013. Product: Hotmail – no longer developed by its maker. Details may be out of date.

Question asked on Oct 22, 2013

I am receiving SMTP Error Code 550-OU-002 when send email from mail domain laotel.com to Hotmail account.

Undelivered Mail Returned to Sender as below:

This is the Spam & Virus Firewall at Barracuda.laotel.com.

I'm sorry to inform you that the message below could not be delivered.

When delivery was attempted, the following error was returned.

<*** Email address is removed for privacy ***>: host mx1.hotmail.com[65.55.92.168] said: 550 OU-002

(SNT0-MC3-F42) Unfortunately, messages from 115.84.127.11 weren't sent.

Please contact your Internet service provider since part of their network

is on our block list. You can also refer your provider to

FROM command)

LTC Admin
+85620 55621124

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