Mailing List Message #92777
From: Mitchell Kahn <>
Subject: Re: Apple iPhone won't receive email
Date: Fri, 28 Sep 2007 11:49:02 -0400
To: CommuniGate Pro Discussions <>
X-Mailer: Apple Mail (2.752.2)

Some service providers, typically telcos, block port 25 on mail not going through their servers as an attempt to block spammers (clearly, this doesn't work). Try setting up an alternate port number in addition to port 25 and have your iPhone client use that port number.


On Sep 27, 2007, at 10:38 PM, Daniel Pratt wrote:

The firewall is configured to allow ports 110 and 25.

If I use my laptop, and test this with Entourage on a Mac from my house, it
works just fine. But for some reason the iPhone can't with just a normal POP

I haven't configured web mail on CG.


Pop or IMAP is immaterial both work with the iPhone.

Is your firewall configured to allow the remote traffic? You should at least
get connection attempts in the CHP logs, if you have all logging enabled.

Can your other remote devices connect?

Can the iPhone access web mail?

Eric Chamberlain

On Sep 27, 2007, at 1:55 PM, Daniel Pratt <> wrote:

So, am I to assume that I can't set this up as a POP account? That I have to
use IMAP with SSL?

Here's what I have setup:

- created an account entitled "iphone"
- made sure that the "mobile" option is enabled for the account "iphone" in
the account settings
- checked "allow mobile users to login" under Settings ---> Protection
- "Process as a client IP address" is checked

The iPhone still does not connect and receive mail.

I'm at a loss. I see nothing in the log that an attempt was even made.

From: Dave Pooser <>
Reply-To: CommuniGate Pro Discussions <>
Date: Wed, 19 Sep 2007 18:35:30 -0500
To: CommuniGate Pro Discussions <>
Subject: Re: Apple iPhone won't receive email

For some reason there are settings that you can't
configure and the sync takes care of. SSL for IMAP and SMTP are
among the settings.

Actually, those settings can both be configured through the phone's Settings
app, under "Mail" on a per-account basis. It defaults to using the standard
IMAPS port (993) but defaults to using port 25 for SMTP; both can be
overridden by appending the port to the end of the hostname, separated by a
colon: "" for instance.

(I just got my iPhone and went through that problem. My biggest difficulty:
it's hard to type a complex password on the on-screen keyboard. I typoed the
first time and thought I had an SSL problem when it was really just a bad
-- Dave Pooser

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