Mailing error from outlook express

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The SMTP server rejected the message 'test mail' due to an incorrect From: field. The reply given by the service provider was '553 sorry, Authentication failed or timed out. Please do get messages first to authenticate yourself.(#4.4.3)

What I have tried:

tried changing the smtp address

Posted 24-Jan-17 19:54pm

Member 12966769

Updated 24-Jan-17 21:36pm

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OriginalGriff · Answer 1 · 2017-01-24T21:36:00

The error is pretty clear:

... an incorrect From: field. The reply given by the service provider was '553 sorry, Authentication failed or timed out. Please do get messages first to authenticate yourself.(#4.4.3)

The "From" address you have supplied is not fully configured on that server - or doesn't exist - and the server is rejecting any messages you want to send from it.
Look at your mail server and check the "From" account carefully.