unable to send mail error 5.7.1 we were unable to deliver your message. Please try resending your message by adding some text. What does that mean?
So I have text in the message, It doesn't matter how much or how little. Anyone else have this happening? How do I fix it?
So I have text in the message, It doesn't matter how much or how little. Anyone else have this happening? How do I fix it?
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Hi,
As Firefox doesn't 'do' email, would you please take a look at this article :
https://support.mozilla.org/en-US/kb/problems-with-email-how-to-find-help
In case you are using Thunderbird, you can post your question on their support forum :
https://support.mozilla.org/en-US/products/thunderbird
(Click on 'Ask a Question' at the top of the page)
However, if you're using Yahoo Mail - I found this thread :