On a home computer, an employee uses Outlook to access his office email. He is successful in receiving all email. However when he tries to use the business account to respond or send a new message to someone outside the company, he gets the error message "no transport available". What needs to be changed and where? His computer? Office email server? This was possible last year and suddenly became unusable. He can respond to or email staff with no problem.
Hope List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm