Most troublesome domains:
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Domain: wanadoo.es
Count: 9
Typical error: 550 Spam detected
Affected lists: endurance_sports_travel
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Domain: jamejamonline.ir
Count: 3
Typical error: 550 5.7.1 Message rejected as spam by Content Filtering.
Affected lists: irqo
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Domain: sparta.com
Count: 3
Typical error: 550 5.7.1 Blocked by SpamAssassin
Affected lists: endurance_sports_travel
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Domain: carltonfields.com
Count: 3
Typical error: 550 5.7.0 >... Local Policy Violation
Affected lists: endurance_sports_travel
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Domain: southwestcc.org
Count: 3
Typical error: 554 5.3.0 1215915730.29285.k071 Destination server rejected recipients
Affected lists: endurance_sports_travel
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Domain: bdonline.com
Count: 3
Typical error: 554 5.7.1 Message cannot be accepted, spam rejection
Affected lists: pjalert
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Domain: occstrategy.com
Count: 3
Typical error: 550 Administrative prohibition - envelope blacklisted
Affected lists: endurance_sports_travel
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Domain: slsb.org
Count: 2
Typical error: 550 Relaying denied
Affected lists: pjalert
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Domain: europarl.europa.eu
Count: 2
Typical error: 501 5.7.1 This system is not configured to relay mail (r) from > to > for 67.200.150.180
Affected lists: irqo
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Domain: mail.sprint.com
Count: 1
Typical error: 554 >: Relay access denied
Affected lists: tbe_shabbat-o-gram