Emails will not come in over the WiFi at work, is there a setting on the DNA I need to change ?

[jasper7821]

When I'm connected to WiFi at work some of my emails are not coming in.
When I turn off the WiFi I get an immediate message that says Network Error
When I turn off WiFi, the emails start coming in.

I have 4 Yahoo accounts, one Gmail, one SBCGlobal,and one Microsoft Exchange.
One WiFi, the SBC, and three Yahoo accounts don't get emails and when I go into the email and refresh it says Network Error.
One yahoo, Gmail, and Microsoft Exchange work fine on WiFi and cell coverage.

As soon as I unplug the WiFi at work the emails that didn't work on WiFi start coming in.
does anyone have any suggestions? All the accounts are on the same settings.

 

[n8mack33]

Yes, you might need to use the external mail address. I think we had something similar. So instead of "mail.company.com" it would be "123.132.232.121". It is a firewall issue.