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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

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.

2 REPLIES 2
jab1
Legend
Posts: 17,803
Thanks: 5,790
Fixes: 267
Registered: ‎24-02-2012

Re: Delivery to the following recipients failed permanently

Are these to Gmail users, or everyone?

John
MisterW
Superuser
Superuser
Posts: 15,483
Thanks: 5,988
Fixes: 425
Registered: ‎30-07-2007

Re: Delivery to the following recipients failed permanently

Fix

@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

 

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