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Can't send, get error message 5.7.1

  • 1 reply
  • 42 have this problem
  • Last reply by christ1

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Here is the complete message:

An error occurred while sending mail. The mail server responded: 5.7.1 [address] Relay access denied. Please check the message recipient [address] and try again

Using Outlook with same server settings, messages go through. If I resend multiple times from Thunderbird the message goes through. If I move the message to draft, and then check the isp's webmail, the message has been received by my isp and is in the proper webmail draft folder. Last night I had the same issues on my home computer (I'm currently at work).

Any help?

All Replies (1)

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The 'Relay access denied' error indicates your email provider is different to your ISP.

Can you post your Troubleshooting Information?
Help - Troubleshooting Information

What is your ISP?