Hi I am currently an intern doing C# windows form and my company uses CPanel for their email. I have problems sending to external domains such as gmail.com and yahoo.com using the 2 external email ports that are given(25 and 465) I tried using port 587 and it is the only port that managed to send to external domains. I have tested port 25 and it manage to send to internal domains only. Therefore i came to a conclusion that it is related to the settings of the email created in CPanel. I would like to ask are there any advice on what is needed to change to enable the email to be able to send out? Thanks in advance