topic Re: Error when sending mail in New Outlook - Windows 11 in Email

Error when sending mail in New Outlook - Windows 11

colh2002 — Tue, 05 Mar 2024 08:49:58 GMT

I am using new outlook with windows 11. I get a successful account creation message and I can receive mails ok. When I try to send a mail i get the following error

Technical details

SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'smtp.talktalk.net' Port '587'. --> Unexpected SMTP server response. Expected: 235, actual: 535, whole response: 535 5.7.0 hQGJr3f2Wax05 Authentication Credentials Invalid (TT300)
 
Failure code: cf24

Any ideas on how to resolve this

Regards

Re: Error when sending mail in New Outlook - Windows 11

Divsec — Tue, 05 Mar 2024 11:24:09 GMT

Hi @colh2002 I've found new Outlook to be very difficult and reverted to regular.

Your post has been escalated and you should hear soon from someone more qualified, good luck and I look forward to reading your solution.

Re: Error when sending mail in New Outlook - Windows 11

Gondola — Tue, 05 Mar 2024 11:43:00 GMT

Hi @colh2002

TT300 is a credentials fail which means the outgoing server is not accepting the password.

Is the password correct and importantly, strong enough? At least 8 characters, multicast letters and at least one number and one symbol.