Emails to Virgin.net address not arriving

[#1]

I am still trying to absolutely confirm this but it appears that emails sent to a Virgin.net address just aren't arriving with no bounce back
Is anyone else seeing this

[#2]

PlusNet's e-mail servers have been blacklisted by SORBS yet again today. Maybe this has something to do with your problems.

[#3]

Looks as though one has arrived albeit a bit late so I suspect a Virgin problem

[#4]

SORBS removed the blacklist this afternoon, so I think it's more likely to be due to SORBS blacklist.
When PlusNet's servers are blacklisted, they will continue trying to send the e-mail until the servers are removed from the blacklist. At no point will you receive any notification from PlusNet that the e-mail has been delayed. When the servers are removed from the blacklist, the delayed e-mails suddenly arrive.

[#5]

I don't know about Virgin but I have seen exactly the same with btinternet.com addresses for some considerable time now...

[#6]

Interesting I have just seen a report of this problem with BTinternet  from a TalkTalk address