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From a colleague
No settings have been changed on the phone or the laptop apparently - any ideas?
I’ve been having a problem using the 3G portable wi-fi hotspot on the Android phone /T-mobile network and wondered if you know what might be causing it?
The laptop connects to the HTC network ok and the internet works fine, but when I try to use Outlook I can only receive them but not send them (it says ‘cannot find the email server’. I can send e-mails from the phone itself, just not from the laptop.
This happened on the train on the way to and from Plymouth, but when I was using the B&B’s wi-fi the emails worked fine so I think it’s to do with the phone.
HTC and or android are bobbins when it comes to changing between 3G and wireless in my experience. It may be a network provider thing though but I doubt it, I have similar problems with Virgin. I find going from 3G to wireless is the worst, completely cocks things up.
Best fix for me is to enter airplane mode, wait a few seconds, turn airplane mode off.
At a guess you need to change the outlook outgoing mail server to the one supplied by T Mobile to send mail?
Mmm - thanks folks. Its a little bit vague TBH, but I'll look into your suggestions.
Outlook will be trying to find it's normal outgoing SMTP server and won't be able to when he/she is using the T-Mobile broadband, as the phone will send outgoing mail traffic through it's own server (I think).
Have a look in to authentication
[url= http://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#Outgoing_mail_SMTP_server ]Outgoing SMTP [/url]
You're changing carriers, so SMTP email will break unless you're using some sort of authentication when you send. Gmail uses a secure connection over port 465 IIRC - first port of call is to check outbound server settings on Outlook.
It's also possible that your phone service provider blocks some ports when tethering.
no problems with 3G <-> wireless here. HTC Desire + 2.2 on Vodafone.
Yep as people have said. Outlook will try to connect to the smtp server to send your emails. However saying that I assume your colleague is using outlook to connect to gmail. If so they should be providing authentication details anyway. Tell them to work through this guide [url= http://mail.google.com/support/bin/answer.py?answer=77689 ]http://mail.google.com/support/bin/answer.py?answer=77689[/url]
You normally have this problem when connecting to an isp's classic POP/SMOTP email server. So you connect with your BT ADSL for example and send emails to smtp.bt.com which has no authentication and works fine because your broadband is via BT and you're on their domain. However if you connect via 3G or another ISP (virgin, talk talk ect) then you're on their domain and the bt.com domain has no idea who you are so tells you to naff off.