Most troublesome domains:
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Domain: 9online.fr
Count: 3
Typical error: 552 5.2.0 VcqC1Z00d08JAew08cqCZZ rejected, SPAM detected
Affected lists: privacyworld
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Domain: howardkennedy.com
Count: 3
Typical error: 554 email rejected due to security policies - MCSpamSignature.sa.7.5
Affected lists: naomiragen
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Domain: sefarad.org
Count: 3
Typical error: 554 5.7.1 Penalty Box error, please contact the server support to ensure delivery
Affected lists: naomiragen
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Domain: privacyblackbook.com
Count: 1
Typical error: 554 >: Relay access denied
Affected lists: privacyworld