Mailman accepted an insecure email for the list
Mailman accepted an email from "info@xxxx.com" and dispersed it to a closed list on the domain xxxx.com
The email was sent from some 3rd party domain using "from:" info@ of this domain.
The mailing list doesn't allow anyone but admins of the list to send. info@xxxx.com does not exist as a member of the list, an admin, or in cPanel as a forwarder or as a mail account. Domain forwarders are off.
Please advise how to fix this insecurity.
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Hey there! I'm not sure if this one is going to be fixable over a Forums post, because as you said, this shouldn't happen at all. We'd likely need to examine the system in question to see if there are any issues that may have led to this behavior.
I did check the mailman settings for various admin functions, and anything that would cause a domain-wide approval (where all emails/users from a certain domain are automatically approved) is a custom function that would have to be manually implemented, so I really don't have a good explanation.
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