Avatar of MezzutOzil

asked on 

Incoming mail blocked by Exchange 2010 antispam, how to unblock?

This is using MS Exchange 2010 server with antispam. There is a mail blocked by antispam with  the following messages:

  The following message to <usera@abc.com> was undeliverable.
The reason for the problem:
5.3.0 - Other mail system problem 550-'5.7.1 Message rejected as spam by Content Filtering.'

Suppose the sender email domain is @sender.net, how to unblock it in antispam?


Avatar of undefined
Last Comment

8/22/2022 - Mon