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.NET Forum / ASP.NET / General / March 2008SmtpClient How to detect if its a valid email or not
Hello all, b4 anything, i am using iis smtp to send the emails.. is there anyway to detect if the "To" email is a valid one ? Like for eg. To = sadjwqewe@askjqw.com (so this email of course doesnt exist, but is there anyway to detect that ?, or if the email exist but the inbox is full etc..) i know that if i set the delivery method to pickup from iis and the email fails, it ill drop it in the badmail folder, but i dont think that is nice.. is there any other way to detect any errors when the email was sent besides checking the badmail folder ? Thx in advance... What do you plan to do if their inbox is full? Don't most SMTP installs allow you to specify an "admin"/bounce account where you get notified of delivery errors? Jeff > Hello all, > b4 anything, i am using iis smtp to send the emails.. [quoted text clipped - 11 lines] > > Thx in advance... well if inbox is full, i would but that email to that person on hold, and would try again in a few hours, and if the email doesnt exist i would set that the client would not receive any more emails. well i can set an email to delivery on error, but isnt it possible to detect such errors at the moment of send ? Like try { SmtpClient.Send(msg) } catch(Exception ex) { //and for eg. i could get such errors here } is such thing possible ? > What do you plan to do if their inbox is full? > [quoted text clipped - 18 lines] >> >> Thx in advance... How can you tell if an inbox is full, until you send a message, and get the response? I don't think a full inbox or an invalid email raises a runtime exception. My suggestion is to monitor that admin/bounce account You aren't sending spam, are you? > well if inbox is full, i would but that email to that person on hold, and > would try again in a few hours, and if the email doesnt exist i would set [quoted text clipped - 37 lines] >>> >>> Thx in advance... its a kind of newsletter that users choose to receive or not when registering not spam =D, but my boss wants this kind of feature, so i guess my only option is to monitor the email as you said, altho it ll be a little more difficult.. > How can you tell if an inbox is full, until you send a message, and get > the response? [quoted text clipped - 46 lines] >>>> >>>> Thx in advance... unfortunately due to spam, this feature no longer exists. you used to a bounce message, that the email addrss was invalid, but most mail host no longer supply this. (the spammer would just hit mail servers with generated names, and knock out bounces from the list). the most common approach, is when someone signs up for mail, you send a validation email to them, that they reply from (often at signup). -- bruce (sqlwork.com) > Hello all, > b4 anything, i am using iis smtp to send the emails.. [quoted text clipped - 11 lines] > > Thx in advance...
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