On Thu, Sep 26, 2013 at 02:52:51PM +0100, Steve Blinkhorn wrote: > I have the need to configure my mail servers to accept remote mail > from company smartphones, which will have unpredictable IP addresses > at any given time.
Not a problem, see below. > As I understand it, this is best done using port 587 ... I would recommend to support both port 25 and 587. > ... and a suitably configured imapd, but it is not clear to me whether > stock imapd can do the job. What you really need is SMTP authentication. It however happens that Dovecot, a very good IMAP server, can also be used to add support for SMTP authentication to Postfix, a very good Mail Transport Agent and SMTP server. > I get the impression that I need to build something like > dovecot - but what is the difference between dovecot and dovecot2? I would recommend to build Dovecot 2.x from "pkgsrc/mail/dovecot2". > I guess this is all obvious once you know it, but if there's a "how to > get started with port 587" guide, that would be really helpful. Please refer to the Dovecot wiki or the Postfix documentation for configuration examples: http://wiki2.dovecot.org/HowTo/PostfixAndDovecotSASL http://www.postfix.org/SASL_README.html#server_dovecot I've got such a setup running on my mail server and it works very well. Kind regards -- Matthias Scheler http://zhadum.org.uk/
