Which port no i should choose to send email

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Dear codeproject members
I want your kind attention towards following problems:

1. I have a problem in C# winform application. I want to send email from my application but i have to choose the host and port number at runtime e.g. smtp.mail.yahoo.com and port no 465 or smtp.google.com etc. 587. what must be the best alternative to acoomplish this?

2. When I am testing this application then antivirus (quick heal) installed on my pc is blocking my application and saying that is not trusted email client. how can I include my application in antivirus / windows trusted email client list programmatic?

3. Is it required that we should use default port 25 or any other port like 465 or 587?

Thanks in advance

Posted 23-Mar-12 0:29am

vijay tkakur progchd

Updated 23-Mar-12 1:56am

Peace ON

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[no name] 23-Mar-12 7:57am

Spellings and Grammatical errors corrected.

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Peace ON · Answer 1 · 2012-03-23T02:00:00

Find following links useful for sending email using C#. You need to not to configure port, the email server automatically takes port internally.

http://social.msdn.microsoft.com/forums/en/netfxnetcom/thread/a75533eb-131b-4ff3-a3b2-b6df87c25cc8/

http://www.c-sharpcorner.com/uploadfile/scottlysle/send-email-messages-and-attachments-using-C-Sharp/

Find following link useful for unblocking email client by antivirus through code using c#.

http://stackoverflow.com/questions/3194978/prevent-anti-virus-to-block-outgoing-email-with-c-sharp

Hope this help!