[CentOS] Email access via Android device

Mon Oct 7 22:37:31 UTC 2013
Gary Greene <ggreene at minervanetworks.com>

> From: centos-bounces at centos.org [centos-bounces at centos.org] on behalf of Frank Cox 
> [theatre at melvilletheatre.com]
>>   Alternatively your android device is perfectly capable of dealing
>> with 6 remote servers directly.
> The reason for handling outbound email this way instead of sending it directly
> from my phone (or whatever) is that this way I won't have to worry about sender
> restrictions on the various mailservers.  For example,  my own little mail and
> webserver lives on the 192.168.0.x network in my theatre, and postfix relay is
> set up to permit_mynetworks only.  In addition, I think (though I'm not
> completely certain) that both of the ISPs that I have service from allow email
> to be relayed through their mailservers only from a network address that's one
> of theirs.  I have routing tables set up on my main computer to make sure that
> outbound email goes out via the appropriate gateway.  I won't have to open up
> my own mailserver to relay any more than it does now, and the outbound email
> should continue to work as it does now.
> It appears that I can make this whole mess work over a ssh connection via VX
> Connectbot, so simply forwarding port 22 on my gateway routers to my main
> computer should buy me everything that I need.  Plus that gives me a commandline
> on my main computer from anywhere, and I can play with vnc on my phone too.  I
> don't know how usable vnc would actually be on such a small screen but I'll
> give it a shot one of these days and see what it looks like.
> That's my scheme so far.  Any of you fine folks are very welcome to tell me why
> it won't work or suggest a better way to get from Point A to Point B.  I've
> never set up anything quite like this before so it's a figure-it-out-as-I-go
> procss.

Being a mail administrator for both work, and a couple of other sites, the only concern I would have with this is that you need to be fairly careful that the outgoing is routing out a machine that is authorized to send mail for these domains, otherwise, you'll be looking at a lot of providers blocking your messages as being potential spam fodder and subsequently blacklisting you or the domains in question.

Gary L. Greene, Jr.
Sr. Systems Administrator
IT Operations,
Mienrva Networks, Inc.
Cell: (650) 704-6633