[AusNOG] Telstra and port 25 for iPhone outbound

[Jeremy Begg]

Hi Darren,
 
>Can anyone tell me if Telstra blocks port 25 SMTP outbound on their 3G
>network for iPhones ?

Can't speak for Telstra, but certainly any ISP doing their job properly will
block port 25 (except to the ISP's own mailserver).
 
>We have a client who claims Telstra says "the outbound email sending via
>non-Telstra ISP is _not_ blocked for iPhones".

I'd take that statement (if accurate) to mean "we treat iPhone like any
other mail client".

>Our experience is that this is generally blocked for customers wanting
>to send messages via their own ISP (ie: not using Telstra) and that we
>need to configure mail.bigpond or similar as the outgoing SMTP service.
>
>Happy to hear from others here.

Use port 587 or port 465 (SSL).  Both should require the client to supply
username & password (or other authentication) as part of the SMTP dialogue.

Regards,

        Jeremy Begg

  +---------------------------------------------------------+
  |            VSM Software Services Pty. Ltd.              |
  |                 http://www.vsm.com.au/                  |
  |       "OpenVMS Systems Management & Programming"        |
  |---------------------------------------------------------|
  | P.O.Box 402, Walkerville, |  E-Mail:  jeremy at vsm.com.au |
  | South Australia 5081      |   Phone:  +61 8 8221 5188   |
  |---------------------------|  Mobile:  0414 422 947      |
  |  A.C.N. 068 409 156       |     FAX:  +61 8 8221 7199   |
  +---------------------------------------------------------+