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Thunderbird An error occurred while sending mail. The mail server responded: 550 5.7.1 053EjZB8002391 This message has been blocked for containing SPAM-like characteristics.. Please check the message and try again.

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  • Last reply by Matt

johnmac2
johnmac2
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Can't send any mail from one of my accounts.

I tried to Add a signature & got the above error message - have now removed the Sig rebooted PC but still can't send emails.

Can't send any mail from one of my accounts. I tried to Add a signature & got the above error message - have now removed the Sig rebooted PC but still can't send emails.

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Matt
Matt
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Have you asked your mail provider what the issue is that they are rejecting your mail. That message is from them, not Thunderbird. Thunderbird is just reporting the error it is given why it has to stop what it is doing.