Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




4974 posts

Uber Geek
+1 received by user: 105

Trusted

Topic # 31250 10-Mar-2009 13:29
Send private message

The Koru lounges offer free wireless internet for its users. I normally use Outlook HTTP to access mail and that works fine. But lately I have been wanting to access my personal mail and use Outlook, not a web service. I could never get sending mail to work - always some authentication error or some other wierd error. And to make it more confusing, if using Outlook on the same machine I connected to the Internet using my cellphone (over the VF network via Bluetooh) or for that matter, Wellington Airport's free wifi service mail would go out fine.

I am not using an ISP SMTP server but my own domain's server with authentication.

Then I had an inspiration - perhaps Koru is blocking port 25. Sure enough when I switched to the alternate port offered by my mail hosting provider, mail went out fine.

So that raises the question - what security issues could there for AirNZ to block port 25 on their free wifi service and of course not tell anybody about it?




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


Create new topic
3504 posts

Uber Geek
+1 received by user: 985


  Reply # 200403 10-Mar-2009 13:58
Send private message

presumably to stop spamming, or maybe they just use XTRA as their ISP



4974 posts

Uber Geek
+1 received by user: 105

Trusted

  Reply # 200421 10-Mar-2009 15:18
Send private message

Kind of silly really. You would expect their smtp server (if indeed they had one available) to have authentication and any other SMTP server to have the same. They are just making life difficult for their (presumably higher valued) customers.

Out of interest does Xtra block port 25?




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


 
 
 
 


6328 posts

Uber Geek
+1 received by user: 391

Moderator
Trusted
Lifetime subscriber

  Reply # 200463 10-Mar-2009 19:36
Send private message

lchiu7: So that raises the question - what security issues could there for AirNZ to block port 25 on their free wifi service and of course not tell anybody about it?


I would say the vast majority of people who go through the Koru lounge aren't that tech savvy, possibly use VPNs to access their office email, or even webmail. It's not that uncommon to block port 25, I'd say that if it wasn't blocked people would use their connection to spam, someone may have done this in the past hence the current security policy.

Not sure about Xtra, but Xnet block outgoing connections on port 25 (excluding their own SMTP server) unless you have a static IP.  Now if someone could only get China et al to implement a similar policy to help spam originating from their part of the world.



4974 posts

Uber Geek
+1 received by user: 105

Trusted

  Reply # 200468 10-Mar-2009 20:01
Send private message

Looking at the usual crowd in the Koru I would say your assumption about their tech savviness is probably correctWink

As for blocking port 25 - to SPAM you still need an open SMTP server but I guess there are no shortage of them around still

I got around my problem because luckily my email hoster provides a different port for SMTP which worked fine




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


4127 posts

Uber Geek
+1 received by user: 550

Trusted

  Reply # 200478 10-Mar-2009 20:44
Send private message

I just switched to xtra from telstraclear and found all my emails stop working, I am of a domain with email hosting, which uses it's own smtp server.  So yes Telecom does generally block port 25.

The suggestion I had from my email provider was to use port 26.  There is also a SSL smtp port 465 or something like that.

So perhaps one of those ports is available for your email as well.




Previously known as psycik

NextPVR: 
Gigabyte AMD A8 Brix --> Samsung LA46A650D via HDMI, NextPVR,
OpenHAB: ODroid C2 eMMC DriveOpenHAB with Aeotech ZWave Controller, Raspberry PI, Wemos D1 Mini, Zwave and Bluetooth LE Sensors
Media:Chromecast v2, ATV4, Roku3, HDHomeRun Dual
Windows 2012 
Host (Plex Server/Crashplan): 2x2TB, 2x3TB, 1x4TB using DriveBender, Samsung 850 evo 512 GB SSD, Hyper-V Server with 1xW10, 1xW2k8, 2xUbuntu 16.04 LTS, Crashplan, NextPVR channel for Plex,NextPVR Metadata Agent and Scanner for Plex


Nate wants an iphone
3904 posts

Uber Geek
+1 received by user: 30

Mod Emeritus
Trusted
Lifetime subscriber

Reply # 200483 10-Mar-2009 21:15
Send private message

davidcole: I just switched to xtra from telstraclear and found all my emails stop working, I am of a domain with email hosting, which uses it's own smtp server.  So yes Telecom does generally block port 25.
.


You can opt out of port 25 by visiting the Xtra website. No static IP required.




webhosting |New Zealand connectionsgeekzone IRC chat
Loose lips may sink ships - Be smart - Don't post internal/commercially sensitive or confidential information!


Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.