Re: [OT] Sendmail: Open relay was tested as closed but...

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Dan Thurman writes:

for some reason, spammers are getting through TLS
and are bypassing/ignoring access database?  I poured
over the Internet but have yet to figure it out...

The most common way is by hacking the client's PC, and authenticating to the mail server using the stolen loginid and password.

Change all your passwords.

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