Mailstore home can no longer connect mail.plus.net POP3

[#1]

As a diagnostic test, can you try using the IP address in post #7 in place of the mail.plus.net server name.

[#2]

That works perfectly - guessing that's only a short term fix though

[#3]

And not surprisingly "accept all certificates" needs to be enabled even with AVG disabled

[#4]

No, it most certainly is not a fix.  It’s a diagnostic comparison.

@dave  / @plusnettony 

This hints at a subtle difference between the old and the new POP3 proxy server.  I recall in the early days of the program we found something similar to do with MD5 support.  Could there be another subtle difference giving rise to this experience?

[#5]

This may be useful for AVG users:
Go to the AVG client's Menu > Settings. Search for "geek:area"

You can disable AVG's man in the middle SSL

[#6]

Yes, I'd agree there must be a subtle difference somewhere such that only a few, niche, clients are broken. (Given that APOP uses MD5 could this be a symptom of the same issue ?)

In the meantime using the IP address I now have a full backup of my mailboxes (ready for the move)!!

[#7]

MD5 is deprecated.

The previous issue was that the new proxy was offering that method but the Plusnet back ends did not facilitate it.  MD5 has been removed entirely.

This appears to have close similarities: either something else is being offered by the new server which is not supported by the back end or something is missing in the new proxy servers.

You should not rely on old IP address mitigation.

[#8]

Having a look, will get back to you.

[#9]

@dave Let me know if there's anything that you would like me to do