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Delivery to the following recipients failed permanently

FIXED
remikz
Newbie
Posts: 7
Thanks: 2
Registered: ‎11-07-2020

Delivery to the following recipients failed permanently

‎01-08-2023 9:33 PM

Hi

I'm unable to send email, in Thunderbird and even in Webmail.

 

Emails are returned with the message "Delivery to the following recipients failed permanently"

Diagnostic-Code: smtp; 550-5.7.26 This mail is unauthenticated

 

Does anyone know what might be causing this please?

Thanks.

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jab1
Legend
Posts: 19,119
Thanks: 6,272
Fixes: 288
Registered: ‎24-02-2012

Re: Delivery to the following recipients failed permanently

‎02-08-2023 6:08 AM

Are these to Gmail users, or everyone?

John
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MisterW
Superuser
Superuser
Posts: 16,218
Thanks: 6,198
Fixes: 447
Registered: ‎30-07-2007

Re: Delivery to the following recipients failed permanently

Fix

‎02-08-2023 7:22 AM

@remikz have a read through some of the threads on here e.g

https://community.plus.net/t5/Email/Problems-sending-emails-to-gmail/m-p/1929130#M43896

https://community.plus.net/t5/Email/Replies-to-Gmail-accounts-being-rejected/m-p/1914789#M42617

 

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

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