Determine if email can be sent successfully

Question

I work in a mail application in C # and, basically, I need to determine which recipients successfully received the message and which not, regardless of the reason for the rejection.

In general, I need an exception that will be thrown when the email address does not exist, for example. However, SmtpClient.Send does not throw an exception in this case, so I will need to track down delivery failure responses and analyze them, maybe.

I know that this is not an easy task, so I would ask you experts on how to deal with the main problems when sending emails.

Thanks in advance!

Answer 1

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, , ?

ping-... .. gmail.com, , .

Answer 2

. SMTP. SMTP- , , , .

Answer 3

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LISTSERV. Return-Path. N , , , , .

I'm not sure if there is an easy way to implement this without LISTSERV, but you can look at smtp2web .