I have previously successfully received emails from people at gloscab.org.uk but now i do not get emails. They do not appear in my Windows Live Email client (inbox nor spam) and if I sign into virgin email webmail they are not in my inbox or spam there either. My spam settings are 'Move message to Spam folder'. I know i should be getting emails as I have got people to copy them to my gmail account that works fine. I also suspect but cannot prove that i am not getting emails from e-on and who knows who else!
You know it is not unknown that for reasons which are hard to ascertain something happens at the sender's end to change the spelling of the e-mail address. You should have checked this this already and perhaps you have. Have a look at one of the successful GMail receipts and check that your VM mail address is being spelled correctly. That would always be my first thought.
E-mails should not just go astray. Your spam settings for VM are good and using the recommended ones. I have checked and the CAB mail domain does not appear to be on any third party run blacklists that might cause rejection - but if they were there'd be a clear and unequivocal bounce message from VM's servers. We've seen these.
It would be a needle in a haystack job for VM's e-mail team to try and see what had happened to past e-mails sent to you. I would ask the CAB to send you a test mail and tell you the precise time and date it was sent. If you get it all well and good. If you don't come back here with the details and we'll advise further.
Superuser 2017/18 Use Kudos to say thanks Mark answer as "helpful" only when the problem is solved Please don't send me private messages unless I ask you to. I do not work for VM. The advice I give is based on my best understanding of VM policy and practice. You rely on it at your own risk.