All subscription notifications not sending when posting from Win Live Writer

Hello,

I've been using Easyblog for about a year now, and haven't had any issues with notifications sending until now.

Seemingly out of nowhere, subscribers have stopped receiving emails when a new blog entry is posted. I write them in Windows Live Writer and then post them to Easyblog remotely.

The exact process;
- set publish date/time to current
- publish to remotely from WLW
- At this stage no mail in mail queue
- Edit post, switch on 'Send Notifications'
- Still no mail in mail queue
- Click on 'Notify'
- Mail in mail queue -> pending -> sent
- Everything looks to have sent, though no emails arrive??

Any ideas?

Many thanks,
Al