Q: smtp.mac.com STARTTLS broken
smtp.mac.com STARTTLS broken
Seen with a variety of mail apps, all of which can't send messages from @mac.com accounts using SMTP anymore: K9 Mail (Android), Gmail (Android), presumably Thundebird, Outlook, etc.
If the outgoing mail server for @mac.com addresses is not smtp.mac.com anymore, I'd really like to know what it is. Can't find any help pages for @mac.com accounts, only for @me.com / @icloud.com (and the servers for those continue to work fine).
Can be reproduced without any mail app at all, using openssl:
$ openssl s_client -crlf -starttls smtp -connect smtp.mac.com:587 CONNECTED(00000003) 140291569379192:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:184: --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 434 bytes and written 240 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE ---
Sanity check, smtp.mail.me.com:
$ openssl s_client -crlf -starttls smtp -connect smtp.mail.me.com:587 CONNECTED(00000003) ... --- Certificate chain ... --- SSL handshake has read 4407 bytes and written 558 bytes --- New, TLSv1/SSLv3, Cipher is AES128-GCM-SHA256 --- 250 SIZE 28311552
Posted on Aug 2, 2015 1:12 PM