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550 5.7.1 0A1An6xf002348 This message has been blocked for containing SPAM-like characteristics.

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  • Last reply by christ1

c.g.moitzi
c.g.moitzi
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550 5.7.1 0A1An6xf002348 This message has been blocked for containing SPAM-like characteristics.

this error message comes when sending e-mails since the last update. How can I fix this.

thanks for help

550 5.7.1 0A1An6xf002348 This message has been blocked for containing SPAM-like characteristics. this error message comes when sending e-mails since the last update. How can I fix this. thanks for help

All Replies (1)

christ1
christ1
  • Top 25 Contributor
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The message is from your email provider's server. So you should talk to them. It has got nothing to do with a Thunderbird update.

Things you can try to avoid this are

  • compose messages in plain text instead of HTML
  • avoid HTML signatures
  • avoid including files in signatures