I've been having some mail sending issues with some messages going missing between sender and receiver. Investigating causes whilst setting up SPF/DMARC and looking at DKIM seems to show that avasout07.plus.net is on the SORBS spam list.
What's the best way to get this to the right technical team at plusnet to follow up and get unlisted? Or to get my email routed via a different mail relay?
My MUA is setup to use an MTA at home. That MTA relays everything through relay.plus.net:587.
avasout07.plus.net appears to be (consistently) the server that forwards on my mail, and as it is on a spam database, it is fairly likely this is contributing to some of my emails going missing. I've noticed this most with recipients using hotmail.