Unable to send E-mails

[Nuttymonkey]

Hi,

Since yesterday, I can receive emails but am no longer able to send them.

This happens on my pc and laptop, 2 seperate email addresses.

All settings are correct, I am using Windows Live Mail, have also set up on Windows 11 Mail and still won't send.

Can you help as I need this working.

Cheers

[用心棒]

It would be helpful to see what, if any, error code is returned by the SMTP server in this situation. Open a Command Shell window and enter the following where username:password is replaced with your email address and password, i.e. richard.branson@virginmedia.com:Y54kpX5g:

curl -v smtps://smtp.virginmedia.com -u username:password

Do not post the resulting output here but instead review it for possible reported causes and then post just the redacted part here or the VM error code.

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[Nuttymonkey]

It says connected to smtp

Lots of info, then near the bottom it says

Authentication Denied (VM305)

Closing Connection

Shutting Down SSL/TLS with SMTP port 465

curl (67) Login Denied

[用心棒]

The VM305 error indicate your public IP Address appears on Spamhaus's lists, to confirm this perform the following steps from the device that cannot send:

1. browse to https://duckduckgo.com/?q=ip&ia=answer and note the Your IP address is value
2. go to https://www.spamhaus.org/lookup/
3. enter the Your IP address is value (from step 1) in the Search single IP, domain or hash field and select Lookup
4. follow the advice offered

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Have I helped? Click Mark as Helpful Answer and solved, or use  Kudos to say thanks

[Ilyas_Y]

Hey @Nuttymonkey thanks for reaching back out to us on the Virgin Media forums.

May I ask if the advice given on the thread has assisted you regarding your query?
Let us know.

Kind regards,
Ilyas.

[Nuttymonkey]

I checked my IP and it was on a blocklist, but now it is working again.

Seems that an update from Virgin had taken place which stopped me sending.