On Mar 14, 2012, at 19:39, Ed W wrote: > On 13/03/2012 23:50, Wietse Venema wrote: >> #submission inet n - n - - smtpd >> # -o syslog_name=postfix/submission >> # -o smtpd_tls_security_level=encrypt > > I forget the exact details now, but one mail client, I think it might be an > Android or iPhone mail client(?) defaults to using the submission service but > without encryption. The error messages were confusing and unhelpful to the > customer and I just recall it took some time to realise that it was the > enforced tls requirement that was the problem > > I see no reason to *require* encryption on the submission port (RFC aside). > I think "may" is a more appropriate default?
I don't know about Android, but we have not seen any issues with the iPhone/iPad. Works fine with TLS 'encrypt' in our setups, as suggested above. Cya, Jona
