On my phone (Android 4.1) I can add an exchange account with the following info all under "Incoming Settings":
-email address [email@example.com] -password -domain\username [serversdomain\myusername] -server url [smtp.ourcompany.co.uk] -Port 
This works great, allows access to the calendar and contact as well as mail. I can connect outlook to the server when i am on the same network, or connected to it via a VPN. But, if i am on a different network it will not connect.
I have tried several different email clients (thunderbird, emMail, evolution) and all require additional settings, some that i cannot provide:
-Name [Ben] -email address [firstname.lastname@example.org] -password -Incoming Server Type [IMAP or POP3] -Incoming Server hostname [smtp.ourcompany.co.uk] ??? not sure about this -Incoming Server port  -Incoming SSL [SSL/TLS] -Incoming Authentication [Normal Password] -Outgoing Server Type [SMTP] -Outgoing Server hostname [smtp.ourcompany.co.uk] -Outgoing Server port  -Outgoing SSL [SSL/TLS] -Outgoing Authentication [Normal Password]
This will connect quite happily to the smtp server for outgoing mail, but will not connect to the server for incoming mail.
My questions are, can someone: -tell me where i am going wrong? -Tell me why my phone can connect with less settings than PC mail clients? -point me to a PC client that will work with the same settings as my phone?