Manage more recipients and SmtpCommandException.

[Didacuss]

Hi, I have this question.
In my message, there are two recipients, one has a correct email address and the other has an incorrect email address. So I aspect that Send method raises an exception but it’s not true, furthermore I see that SmtpCommandException has a MailBox property that:

“This property will only be available when the MailKit.Net.Smtp.SmtpCommandException.ErrorCode value is either MailKit.Net.Smtp.SmtpErrorCode.SenderNotAccepted or MailKit.Net.Smtp.SmtpErrorCode.RecipientNotAccepted and may be used to help the user decide how to proceed.”

However, if there are more emails incorrect ? Where can I find this information?

Thanks in advance.
Regards
Diego Parolin.

[jstedfast]

If the addresses are wrong and you are not getting an exception, then that suggests that the SMTP server is not returning an error when MailKit sends the RCPT TO commands.

To verify this, you can try getting a protocol log.

As far as there only being a single MailboxAddress on SmtpCommandException: that's because of the way the SMTP protocol works. A RCPT TO command is sent for each recipient and the first recipient that fails, the exception gets thrown and the address that failed is stuffed into the SmtpCommandException.