Most troublesome domains:
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Domain: mailvault.com
Count: 5
Typical error: 550 relay not permitted
Affected lists: privacyworld offshore-manual-newsletter
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Domain: gatewaybhs.org
Count: 3
Typical error: 530 5.7.1 Client was not authenticated
Affected lists: secretsoflife
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Domain: ucc1-207.com
Count: 3
Typical error: 554 Sorry, this message appears to be spam (#5.6.0)
Affected lists: ptbuzz
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Domain: appl.sci-nnov.ru
Count: 3
Typical error: 554 5.7.1 Service unavailable for mars.mail-list.com[67.200.150.178], (zaraza:030622:cust.da.uu.net) for exact reason or to be removed from blacklist please e-mail abuse@sandy.ru; Origin:SANDY
Affected lists: offshore-manual-newsletter
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Domain: tin.it
Count: 2
Typical error: 550 RCPT TO:> Relaying not allowed - please use SMTP AUTH
Affected lists: privacyworld secretsoflife
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Domain: sinoasia.com.cn
Count: 1
Typical error: 554 >: Relay access denied
Affected lists: ptbuzz
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Domain: lakeofburningfire.org
Count: 1
Typical error: 553 sorry, relaying denied from your location [67.200.150.180] (#5.7.1)
Affected lists: drmardy
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Domain: toms.net
Count: 1
Typical error: 550 5.7.1 Unable to relay
Affected lists: drmardy