Hello,
I have a mailing system set up that repeatedly sends news to registered users on my website. However, sometimes the e-mail doesn't arrive, for various reasons (like a full inbox, closed mail account, etc). I noticed that mails to these invalid receivers are being sent repeatedly, until they finally arrive or timeout.
I was wondering if there is any way to prevent this, like an attribute in the MailMessage or SmtpClient classes? I don't want to needlessly strain the mailserver, as it is shared with other websites, so these mails should be send just once, on the first attempt, whether they arrive or not.
Thanks!
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