Free-online server not sending emails from outlook

Thenuttytart · ‎02-07-2025

My outlook has just started refusing to send emails (last 3 days).

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

I checked settings and they haven't changed. My sent items don't have the email in I tried to send. Tried 2 email addresses (both gmail accounts).

Anyone know what's happening?

Thanks

Townman · ‎22-08-2007

Use the email server diagnostics (see the link below) to check your settings.

In another browser tab, login into the Plusnet user portal BEFORE clicking the fault & ticket links

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.

If this post helped, please click the Thumbs Up and if it fixed your issue, please click the This fixed my problem green button below.

Dan_the_Van · ‎25-06-2007

@Thenuttytart

I have tested using Outlook 365 sending from free-online to gmail and yahoo, I did not encounter any issues.

Have you had a chance to the use the email diagnostic as suggested by @Townman ?

The email diagnostic also details the correct client settings.

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.

Thenuttytart · ‎02-07-2025

Thank you both - I will try the email diagnostic after work as it's a bit complicated for a simpleton like me 😄