Cannot send any Plusnet emails

[#1]

Good afternoon. I am unable to send or forward e mails from my account - <redacted> - or my elderly MiL's account - <redacted>.

I get the same error on requests to send new or forward existing mails - SMTP Error(550). Failed to set sender. (5.7.1 Unknown sender).

I'd be grateful if someone can help resolve these issues on both accounts.

Thank you.

Moderator's note:
Personal information removed from a public forum (to an area that staff can see).

[#2]

Good afternoon @safcdl16.

I've just picked up your other post around unarchiving now, and sent you over a private message.

Peter

[#3]

Task <redacted>.f9.co.uk - Sending' reported error (0x800CCC78) : 'Cannot send the message. Verify the email address in your account properties. The server responded: 550 <redacted>.f9.co.uk> sender domain rejected (blacklisted by local policy)'

Can you help me out here? Can't send emails over SMTP..

Moderator's note:
Personal information removed from a public forum (to an area that staff can see).

[#4]

Hi there @drtodd 

Thanks for coming back to the community. 

Do you get this error message with every email you try and send? Could you try sending a test one to your own email, to see if the same happens? 

Have you tried running a virus/malware scan on your device and updating your password? 

Leanne.

[#5]

Hi there, every time I try to send an email it's being rejected with this, indeed I have a test email in my outbox for the last number of days to keep an eye on the problem but seems like I need your help to resolve now.

No problems with virus or password.

Thanks
Darren

[#6]

Hi @drtodd,

We have raised this for you and should be sorted if you wanted to give it a test.

Alex

[#7]

Thank you very much; my problem is now resolved.