Exception thrown sending email messages

Onypips · April 8th, 2015, 01:33 PM

In the book "Beginning ASP.Net 4.5.1 "by Imar - In the "Try-It-Out" Sending E-Mail Messages on p. 324 in Chapter 9 in Step 5 when I request Email.aspx in the browser I get the following exception:

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The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.1 Authentication required
Email.aspx.vb
Line 16: mySMTPClient.Send(myMessage)
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I entered the proper information in the web.config file to send an email from my Yahoo account to my Outlook account. I included enableSsl="true" port="587" in the <network> tag. I tried removing the enableSSl and port tag - same exception. I tried sending from Outlook to Yahoo and got a slightly different exception thrown:

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Mailbox unavailable. The server response was: 5.1.0 Authentication required

Email.aspx.vb
Line 16: mySMTPClient.Send(myMessage)
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THis error is affecting the next exercise and the chapter on AJAX. Any help is much appreciated. Went online and tried a few suggestions but none worked.
Any thoughts?
Thanks!

Onypips · April 8th, 2015, 06:33 PM

I used a gmail account and took out the outlook account and things are working correctly. Must be some authentication problem with MSOutlook? If anyone has any insight into why Outlook is the reason the exception is being thrown, please post.

Imar · April 9th, 2015, 03:47 AM

Do you have two-factor auto enabled for Outlook.com? If so, yo may need an app-specific password: http://www.codeproject.com/Articles/...k-Com-SMTP-Hos

Cheers,

Imar

Onypips · April 14th, 2015, 01:17 AM

I was trying to use the Microsoft outlook that came with MS Office on my machine using Comcast as my smtp. I guess it cant be done this software - I don't have an Outlook.com account. Thanks for pointing this out.

Imar · April 14th, 2015, 05:05 AM

You might be able to use your Comcast account (which then wouldn't use your local Outlook but communicate with Comcast directly) but they may have special requirements for things like server name, port and user credentials:

http://stackoverflow.com/questions/1...ived-php-works
https://www.google.com/?gfe_rd=cr&ei...ast+smtpclient

Cheers,

Imar