The TSR-2018-0001 has changed something that has all my customers that use Apple Mail screaming that they can no longer send mail.
I have spent several hours experimenting with various set-ups on an older Mac OS X 10.7.5 with the result that I can create and configure any IMAP or POP account and they work perfectly downloading and displaying the mailbox folders and messages.
BUT any attempt to send just stalls, it does not matter what port is used and if SSL is enabled or not - it just wont send anything and, understandably, the customers are somewhat unhappy. The connection doctor software that the Mac supplies reports a successful SMTP connection, but the TLS never gets established and the mail is never sent.
Similar tests using Thunderbird on the same old mac laptop seamlessly connected to the server, auto-configured everything and I was able to send and receive on any protocol.
I do not particularly want to have to revert to the old SSL/TLS OpenSSL options, nor re-enable the old Cipher Suit, so any alternative ideas would be gratefully received.
****UPDATE****
I am finally getting some connection information:
I have spent several hours experimenting with various set-ups on an older Mac OS X 10.7.5 with the result that I can create and configure any IMAP or POP account and they work perfectly downloading and displaying the mailbox folders and messages.
BUT any attempt to send just stalls, it does not matter what port is used and if SSL is enabled or not - it just wont send anything and, understandably, the customers are somewhat unhappy. The connection doctor software that the Mac supplies reports a successful SMTP connection, but the TLS never gets established and the mail is never sent.
Similar tests using Thunderbird on the same old mac laptop seamlessly connected to the server, auto-configured everything and I was able to send and receive on any protocol.
I do not particularly want to have to revert to the old SSL/TLS OpenSSL options, nor re-enable the old Cipher Suit, so any alternative ideas would be gratefully received.
****UPDATE****
I am finally getting some connection information:
So I tried setting the SSL/TLS OpenSSL options back to the pre TSR ones, and restored the old set of Cipher protocols - but even though Exim rebuilt and started OK, I still cant get Apple Mail to send anything and all I get in the logs are the messages above.2018-01-23 20:29:53 SMTP connection from [xx.xx.xx.xx]:51391 (TCP/IP connection count = 3)
2018-01-23 20:29:53 TLS error on connection from ([192.168.1.104]) [xx.xx.xx.xx]:51391 (SSL_accept): error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
2018-01-23 20:29:53 TLS client disconnected cleanly (rejected our certificate?)
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