Most troublesome domains:
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Domain: cccofva.org
Count: 3
Typical error: 550 Blocked
Affected lists: the-daily-signal
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Domain: wanadoo.es
Count: 3
Typical error: 550 Spam detected
Affected lists: the-daily-signal
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Domain: irct.org
Count: 3
Typical error: 554 Unable to process message: msg.1215413355.883227.16571 - error: recipient: xxxx@irct.org failed, reason: consider the message to be spam
Affected lists: irqo
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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 64.241.105.26
Affected lists: irqo
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Domain: bubblesexpress.com
Count: 1
Typical error: 554 >: Relay access denied
Affected lists: the-daily-signal
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Domain: triangles-roses.org
Count: 1
Typical error: 554 >: Relay access denied
Affected lists: irqo
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Domain: msti.lk
Count: 1
Typical error: 550 5.7.1 >... Relaying denied
Affected lists: wwrecipes
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Domain: cglq.org
Count: 1
Typical error: 553 sorry, relaying denied from your location [64.241.105.8] (#5.7.1)
Affected lists: irqo
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Domain: leefbaar.nl
Count: 1
Typical error: 550 5.7.1 >... Relaying denied. Proper authentication required.
Affected lists: irqo