550 5.7.1 0A1An6xf002348 This message has been blocked for containing SPAM-like characteristics.
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
Tất cả các câu trả lời (1)
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