I get this error when trying to send my test user's password using the password recovery method:

.... Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed.
at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) .......

my Smtp server is setup to use no-ip mail server, so why is this not working?

Smtp Setting is:
<add key="DisableDotNetOpenMail" value="true" />
<add key="SMTPServer" value="smtp-auth.no-ip.com" />
<add key="SMTPRequiresAuthentication" value="true" />
<add key="SMTPUseSsl" value="false" />
<add key="SMTPPort" value="3325" />
<add key="SMTPUser" value="noip-smtp-user" />
<add key="SMTPPassword" value="noip-smtp-password" />
<add key="SMTPTimeoutInMilliseconds" value="30000" />

mailSettings is:
<mailSettings>
<smtp from="from@domain.com">
<network host="localhost" port="25" password="windows-password" userName="windows-name" />
</smtp>
</mailSettings>
 

I've been working on this all day and have not been successful yet, is the settings correct?
 

Well that solved it, by putting the same netowrk info in the mailSettings.  Through NO-IP and I Have my domain pointing to my own server, plus they have mail service I'm using to send my mail.  This was my goal to design and run my own server insteading paying for hosting service.  I was alwas limitted in what I can do without my own server.