I got a call from Telecom last night saying I need to amend my xtra email setings. It seems that they want everyone to use SSL and authentication to get their email. While the instructions are meant for users using "normall" email clients (Thunderbird, etc...), I've got an email server at home and use sendmail to send outgoing emails. Presently I use sendmail as an smtp relay to smtp.xtra.co.nz. This is still working (for now I guess but expect this server to be turned off at some point?).
The instructions indicate that they want users to use send.xtra.co.nz on port 465 (SSL). While this is OK for the usual clients, it seems this is not possible to setup with sendmail unless you use stunnel. Sendmail prefers TLS (using port 587). I see that send.xtra.co.nz has 587 open, so am wondering if I can use that instead of 465 (will it work and is it supported)?