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550 Authentication - Undeliverable email

71 ratings | 50357 views
How to fix Server error: '550 Authentication is required for relay'
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Text Comments (19)
Letonqua Jackson (1 month ago)
What's the cause of that? What caused it to happen in Outlook?
Brian Lessly (1 month ago)
Sief hossam (2 months ago)
Thank you very much for this information. really, I have been needed for this video.
Daniel Chiakwa (4 months ago)
Thanks.....worked just fine.
CS Bong (1 year ago)
It does not work bro: Hi, How come i have set SMTP banner to align with RDNS ptr. But the following error still bounce back: Please turn on SMTP Authentication in your mail client, or login to the IMAP/POP3 server before sending your message. xxxxxxxx:29732 is not permitted to relay through this server without authentication. Show less
CS Bong (1 year ago)
this option is not avaible on active exchange sync
Tharanga Kariyawasam (1 year ago)
Mussab El (1 year ago)
Thanx ^^
Phuc hoang van (1 year ago)
thanks so much
thanks so much
Makhlouf Youssef (1 year ago)
thanx a lot
Themis Z. (2 years ago)
you are the best
Asma Shah (2 years ago)
thank you
Hoang Long Nguyen (2 years ago)
thank you
Ryan Hosiassohn (2 years ago)
thanks, What happens if that still doesn't work and says smtp server cant be found ? In fact no matter what smtp settings I put it I can receive but not send
Holden ZA (2 years ago)
Walter Marafioti (2 years ago)
Thanks A lot....
Pol Hermoso (2 years ago)
Thank You
Subrata Ghosh (3 years ago)
Thanks for your video.

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