iOS 8.4 killed SMTP SSL/TLS over port 465?
I run an email system with 2500 users, several hundred with iPhones. Today I've started getting reports that after the 8.4 upgrade, they can no longer send out-going mail through our server. I've confirmed this on an iPhone 4S I use. The server accepts authenticated connections over port 465 with TLS/SSL.
Since the upgrade, the server logs the following for every failed attempt:
c-xx-xx-xx-xx.network.net [xx.xx.xx.xx] did not issue MAIL/EXPN/VRFY/ETRN during connection to TLSMTA
It would appear that the upgrade had done something to the SSL/TLS routines in Mail.
Anyone else seeing this?