Problem while trying to send e-mails in C# using zoho smtp

This is the code i am using to send email...

MailMessage mail = new MailMessage();

mail.From = new MailAddress("from email");

mail.To.Add("to email address");

mail.Subject = subject;

mail.IsBodyHtml = true;

mail.Body = body;

mail.Priority = System.Net.Mail.MailPriority.High;

SmtpClient smtp = new SmtpClient("username", 465);

smtp.EnableSsl = true;

NetworkCredential SMTPUserInfo = new NetworkCredential("username", "password");

smtp.Credentials = SMTPUserInfo;

smtp.Send(mail);

tried with another code also...

CDO.Message message = new CDO.Message();

CDO.IConfiguration configuration = message.Configuration;

ADODB.Fields fields = configuration.Fields;

ADODB.Field field = fields[" http://schemas.microsoft.com/cdo/configuration/smtpserver"];

field.Value = "smtp.zoho.com";

field = fields[" http://schemas.microsoft.com/cdo/configuration/smtpserverport"];

field.Value = 465;

field = fields[" http://schemas.microsoft.com/cdo/configuration/sendusing"];

field.Value = CDO.CdoSendUsing.cdoSendUsingPort;

field = fields[" http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"];

field.Value = CDO.CdoProtocolsAuthentication.cdoBasic;

field = fields[" http://schemas.microsoft.com/cdo/configuration/sendusername"];

field.Value ="username";

field = fields[" http://schemas.microsoft.com/cdo/configuration/sendpassword"];

field.Value = "password";

field = fields[" http://schemas.microsoft.com/cdo/configuration/smtpusessl"];

field.Value = "true";

fields.Update();

Console.WriteLine(String.Format("Building CDO Message..."));

message.From ="from email";

message.To = "to email";

message.Subject = "Test message.";

message.TextBody = "This is a test message. Please disregard.";

Console.WriteLine(String.Format("Attempting to connect to remote server..."));

// Send message.

message.Send();

Access your files securely from anywhere

Zoho Developer Community

New to Zoho LandingPage?

Access Zoho LandingPage

Zoho LandingPage Resources

New to Zoho Survey?

Access Zoho Survey

Latest Feature Updates

Explore our Pricing & Plans

Zoho Survey Resources

Android Mobile Surveys

Insurvey Blogs

Insight Blogs

Tips & Tricks

New to Zoho CRM Plus?

Deliver unforgettable customer experiences

ACCESS ZOHO CRM PLUS

New to Zoho CRM Plus?

Deliver unforgettable customer experiences

ACCESS ZOHO CRM PLUS

New to Zoho Marketing Plus?

Everything you need to run your marketing

ACCESS ZOHO MARKETING PLUS

New to Zoho Marketing Plus?

Everything you need to run your marketing

ACCESS ZOHO MARKETING PLUS

New to Bigin?

Signup Now

Access Bigin

Latest Feature Updates

Zoho Desk Resources

Desk Community Learning Series
Digest
Functions
Meetups
Kbase
Resources
Glossary
Desk Marketplace
MVP Corner
Word of the Day

Tout forum

France ZUGs

Zoho SalesIQ Resources

Topic Participants
prasad
Facil Bula Site

Sticky Posts
Zoho Developer Community Monthly Digest - October 2024
Hello everyone, This edition highlights October's product updates, upcoming community events, engaging discussions that sparked inspiration, and celebrates the top contributors who drove progress. Grab your favorite beverage and dive in! Upcoming Events
Zoho Developer Community Monthly Digest - September 2024
Hello everyone, This month's Developer Digest is packed with resources to help you build powerful applications. Learn how to leverage Zoho CRM's new features, explore the latest in Zoho Finance and Catalyst, and join exciting bootcamps, webinars, and
Zoho Developer Community Monthly Digest - August 2024
Hello everyone, Get ready for another exciting month of Zoho development! Our August digest is packed with events, resources, and community discussions to empower you as a Zoho developer. Let's dive right in! Upcoming Events To stay on top of the upcoming
Extensions 101: Build Extensions for Zoho Finance suite
Hello Developers! We are thrilled to announce our 5-day webinar series on building extensions for Zoho Finance Suite products. Our first session was a resounding success, introducing Extensions, Zoho Developer, Zoho Marketplace, and the Zoho Books Developer
Zoho Developer Community Monthly Digest - July 2024
Hello everyone, We're here again with July month's digest packed with exciting events, resources, updates, and community discussions to empower you as a Zoho developer. Dive right in! Upcoming Events To stay on top of the upcoming developer community