From owner-freebsd-questions@FreeBSD.ORG Sun Mar 28 20:49:45 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 45737106566B for ; Sun, 28 Mar 2010 20:49:45 +0000 (UTC) (envelope-from kraduk@googlemail.com) Received: from mail-fx0-f225.google.com (mail-fx0-f225.google.com [209.85.220.225]) by mx1.freebsd.org (Postfix) with ESMTP id C310D8FC0C for ; Sun, 28 Mar 2010 20:49:44 +0000 (UTC) Received: by fxm25 with SMTP id 25so71761fxm.3 for ; Sun, 28 Mar 2010 13:49:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type; bh=SYUVA4l+Ox7fEO/huS12rUnHPKw5glFAIKVE+mT+gBo=; b=qc3+6XdDDuvh/Le+Hflim5ftr+TZoIrTGX4JOOuacaRQsJue7FesLy7xsej2zrI13n 7f168LFkLqjnutamStOEWzP3VcH/4u32dafkGBO+pzBL8g1c6FKg3LSgVWXxWG/wIv0f baPy9pLAsjTJ9RKf6nOnS2LYUmFtRfZy1Uk3E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=ftl51nqBV3lVXpYX662f9m+YaIaUmJ4jPMwZt9fUSJQOw6fTFNKPgSlTqu2qvvEqRt iendifqoq+r18zlLaTz7Fb7l24BGAHEGL3HGrzvPlh9zdAOaTkNTJteDjZiPd06xNg2W TMjGpCy1v8sLfOXvtyDjrQEC5HqxmwK5T5eKA= MIME-Version: 1.0 Received: by 10.239.157.136 with HTTP; Sun, 28 Mar 2010 13:49:43 -0700 (PDT) In-Reply-To: <20100328203849.GD4806@dan.emsphone.com> References: <4BAED536.2060205@rzweb.com> <4baef8de.00G1oLWhtZbJ8Rwl%perryh@pluto.rain.com> <4BAFB9AC.7040406@rzweb.com> <20100328203849.GD4806@dan.emsphone.com> Date: Sun, 28 Mar 2010 21:49:43 +0100 Received: by 10.239.154.135 with SMTP id e7mr345424hbc.76.1269809383514; Sun, 28 Mar 2010 13:49:43 -0700 (PDT) Message-ID: From: krad To: Dan Nelson X-Mailman-Approved-At: Sun, 28 Mar 2010 20:56:22 +0000 Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Tim Judd , perryh@pluto.rain.com, Ron , Jeffrey Goldberg , freebsd-questions@freebsd.org Subject: Re: Freebsd, postfix and push email X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Mar 2010 20:49:45 -0000 On 28 March 2010 21:38, Dan Nelson wrote: > In the last episode (Mar 28), Ron said: > > Jeffrey Goldberg wrote: > > > On Mar 28, 2010, at 1:36 AM, perryh@pluto.rain.com wrote: > > >> Er, no. POP3 and IMAP are "pull" services, wherein the client polls > > >> the server periodically for any newly-arrived messages. > > > > > > IMAP, but not POP3, can be used to push, but the iPhone mail client > > > doesn't support that as far as I know. It does support being pushed to > > > over Mobile Me, but not on regular IMAP. > > > > So how is Mobil Me and Exchange Servers (MS, Zimbra, etc) doing it? > > That's what I'd like to replicate on my FreeBsd server. This seems to be > > a well guarded secret I'd like to crack. > > > > On the iPhone, at least, the phone is not polling the servers, some kind > > of message (SMS?) is being sent to the phone that makes it put a little > > red badge on the corner of the mail app icon telling it how many messages > > are waiting. The messages don't seem to be download during the push, > it's > > just a count (I could be wrong about this). > > For ActiveSync at least, the phone has to keep a TCP connection to the > server open 24/7, and the server sends a notification when a new mail > arrives. MobileMe probably works the same way. The IMAP protocol supports > a similar "notify on new mail" option, but for some reason Apple doesn't > use > it in their client. > > -- > Dan Nelson > dnelson@allantgroup.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > To totally confuse thin most modern mtas can easily be configured to pipe mails to an external program or pipe. This can then to whatever, include pushing stuff to a mobile phone I would imagine.