Cannot connect to mail server through LAN connection

I cannot connect to the server through my Ethernet Connection. I can only connect via Wireless Networks.

I have obtained a Pro License, but still cannot connect via LAN connection

What errors are you receiving (screen shots)?  How is the account set up (e.g., POP3, IMAP, Exchange)?  Who is your email provider?

it seems that there is a Rule in company’s firewall…