elmah - cannot email exceptions - elmah

Question

Setting up elmah has been relatively painless for me. Until I tried to use the email facility. I have read through all the previous questions on the subject but just can't get it going. Here are the relevant entries in my web.config file . This just represents one of the many attempts that I have made, this one using gmail and . What am I doing wrong?
<elmah>
<errorMail
from="myusername#gmail.com"
to="me#myemail.com"
subject="elmah exception"
async="true"
smtpPort="0"
useSsl="true" />
</elmah>
<system.net>
<mailSettings>
<smtp deliveryMethod ="Network">
<network
host="smtp.gmail.com"
port="587"
userName="myusername#gmail.com"
password="..." />
</smtp>
</mailSettings>
</system.net>
<httpModules>
<add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
<add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" />
</httpModules>
EDIT
Just to prove the settings, I have managed to successfully send an email from my app using gmail. The settings used were equivalent and yet I still cannot get elmah to send an email. Hers is the code snippet.
MailMessage mailObj = new MailMessage();
mailObj.Subject = "gmail test";
mailObj.From = new System.Net.Mail.MailAddress("myusername#gmail.com");
mailObj.To.Add("test#myemail.com.au");
mailObj.Body = "Test Email";
SmtpClient smtpClient = new SmtpClient("smtp.gmail.com");
NetworkCredential basicCredential = new NetworkCredential("myusername#gmail.com", "mypassword");
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
smtpClient.Port = 587;
smtpClient.EnableSsl = true;
smtpClient.Send(mailObj);
Even some confirmation that it all appears correct would be useful.

Answer 1

the port is 465 and the protocol is SSL.

Answer 2

Did you consider any ill effects from GMail's 2-factor authentication? I was just having this problem and created an application-specific password for my development work.