On May 10, 2014 1:16:46 AM EDT, Apu M <[email protected]> wrote:
>Not a K-9 Mail problem, but I'm stumped where else to ask.
>
>If I am at home, I cannot connect to my work e-mail server if connected
>via 
>WiFi (Verizon FiOS). (A CentOS-based server running Apache httpd,
>sendmail, 
>dovecot, etc. but, as you'll read below, I don't think it is relevant.)
>If 
>I turn off WiFi, and use the Verizon 4G service, I have no problem. If
>I go 
>elsewhere and connect via WiFi, no problem.
>
>This is with K-9 Mail on a Galaxy Note II (stock OS, not rooted or 
>anything), but is not just K-9 Mail. I cannot open the web mail
>interface 
>on that same server using the web browser on the phone either. But I
>can 
>connect to any other server in the office, including a secondary web
>mail 
>server on the same physical network and IP subnet as the main mail
>server.
>
>To add to the strangeness, other devices on my home WiFi network have
>no 
>problem accessing the mail server that the Galaxy Note II will not
>connect 
>to. This includes Apple Mail & Safari on an iPad and Thunderbird &
>multiple 
>web browsers on a MacBook Pro, and both Chrome and K-9 Mail on an Asus 
>Nexus 7 tablet. Since the home network is NAT'ed by the FiOS router,
>all 
>devices are connecting to the Internet using the same single public IP 
>address.
>
>I have verified there are no outbound firewall rules on the FiOS router
>and 
>no relevant firewall rules on the office side either. Unfortunately, as
>far 
>as I can tell, Samsung disabled something on the Galaxy Note II so I
>cannot 
>use any of the traceroute tools I've found in the Play Store unless I
>root 
>the device. Not sure what other network troubleshooting tools I can use
>to 
>gather more clues.
>
>And so I am stumped. Why can't this one device connect to this one
>server 
>when everything else on the same network has no problems?
>
>Thanks in advance for your insights.
>
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Verify you've got the same ports set up on all clients. Then call Verizon and 
all them if they're doing something.

Without knowing the settings, it's all guesswork.
-- 
Seth H Holmes
Sent from my Nexus 7 with K-9 Mail. Please excuse my brevity.

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