Plusnet suddenly blacklisted by Outlook
Hi
I emailed a long time client today - a reply to their email to me, and to my dismay I received the following reply from their outlook email basically saying mine was rejected for spam - actual message below :-
550 5.7.1 Unfortunately, messages from [IP address deleted by me for security] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [DM6NAM12FT050.eop-nam12.prod.protection.outlook.com]
From doing some research about this, I can see that previously Plusnet has had to contact Microsoft to get this changed so please can this be actioned a.s.a.p. 