In my maillog I see:
Yahoo works fine?
Code:
Jul 3 14:48:58 xxxx sm-mta[84130]: STARTTLS=server, error: accept failed=-1, reason=unknown, SSL_error=5, errno=0, retry=-1, relay=mail-wm1-x331.google.com [IPv6:2a00:1450:4864:20:0:0:0:331]
Jul 3 14:48:58 xxxx sm-mta[84130]: 363CjUgj084130: mail-wm1-x331.google.com [IPv6:tcp] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Yahoo works fine?