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Thunderbird has started refusing to forward some messages due to "suspected spam OB703" - How do I rectify?

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Les
Les
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Thunderbird has started refusing to forward some messages due to "suspected spam OB703" - How do I rectify?

Thunderbird has started refusing to forward some messages due to "suspected spam OB703" - How do I rectify?

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Matt
Matt
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Thunderbird is not refusing, so I guess there is a need to start working out what application is doing so. Or perhaps the message is coming from your providers mail server as it was in the instance of an question with an identical error and with more information here https://support.mozilla.org/bm/questions/1352050