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Ed's avatar
Ed
Tuning in
7 months ago

Unable to send blueyonder,co,uk emails on my iMac. iPad & iPhone are OK. Any suggestions?

For the last 48 hrs or so I have been unable to send emails from my iMac "using the server blueyonder.co.uk. The server response was Authentication Required (VM401)" I have not altered mail settings ...
Ed's avatar
Ed
Tuning in
7 months ago

Thanks for your response. Answers to your questions are as follows:

My iMac is on the last software update - macOSVentura 13.6.7, I don't use a VPN, screenshot of error message attached, and it is stopping emails going to ALL recipients.