How can I make SMTP authenticated in C

Question

I create new ASP NET web application that use SMTP to send message  The problem is the smtp was not authenticated from who send the message      How can I make SMTP authenticated in my program  does C  have a class that have attribute for enter username and password

User · Answer

In my case even after following all of the above  I had to upgrade my project from  net 3 5 to  net 4 to authorize against our internal exchange 2010 mail server

User · Answer

How do you send the message   The classes in the System Net Mail namespace  which is probably what you should use  has full support for authentication  either specified in Web config  or using the SmtpClient Credentials property

User · Answer

Ensure you set SmtpClient Credentials after calling SmtpClient UseDefaultCredentials   false    The order is important as setting SmtpClient UseDefaultCredentials   false will reset SmtpClient Credentials to null

User · Answer

Set the Credentials property before sending the message

User · Answer

using System Net  using System Net Mail   using SmtpClient smtpClient   new SmtpClient          var basicCredential   new NetworkCredential  username    password         using MailMessage message   new MailMessage                  MailAddress fromAddress   new MailAddress  from yourdomain com              smtpClient Host    mail mydomain com           smtpClient UseDefaultCredentials   false          smtpClient Credentials   basicCredential           message From   fromAddress          message Subject    your subject              Set IsBodyHtml to true means you can send HTML email          message IsBodyHtml   true          message Body     lt h1 gt your message body lt  h1 gt            message To Add  to anydomain com              try                       smtpClient Send message                     catch Exception ex                          Error  could not send the message             Response Write ex Message                       You may use the above code

User · Answer

Set the Credentials property before sending the message

User · Answer

To send a message through TLS SSL  you need to set Ssl of the SmtpClient class to true   string to    jane contoso com   string from    ben contoso com   MailMessage message   new MailMessage from  to   message Subject    Using the new SMTP client    message Body     Using this new feature  you can send an e-mail message from an application very easily    SmtpClient client   new SmtpClient server      Credentials are necessary if the server requires the client     to authenticate before it will send e-mail on the client s behalf  client UseDefaultCredentials   true  client EnableSsl   true  client Send message

User · Answer

using System Net  using System Net Mail   using SmtpClient smtpClient   new SmtpClient          var basicCredential   new NetworkCredential  username    password         using MailMessage message   new MailMessage                  MailAddress fromAddress   new MailAddress  from yourdomain com              smtpClient Host    mail mydomain com           smtpClient UseDefaultCredentials   false          smtpClient Credentials   basicCredential           message From   fromAddress          message Subject    your subject              Set IsBodyHtml to true means you can send HTML email          message IsBodyHtml   true          message Body     lt h1 gt your message body lt  h1 gt            message To Add  to anydomain com              try                       smtpClient Send message                     catch Exception ex                          Error  could not send the message             Response Write ex Message                       You may use the above code

User · Answer

Set the Credentials property before sending the message

User · Answer

To send a message through TLS SSL  you need to set Ssl of the SmtpClient class to true   string to    jane contoso com   string from    ben contoso com   MailMessage message   new MailMessage from  to   message Subject    Using the new SMTP client    message Body     Using this new feature  you can send an e-mail message from an application very easily    SmtpClient client   new SmtpClient server      Credentials are necessary if the server requires the client     to authenticate before it will send e-mail on the client s behalf  client UseDefaultCredentials   true  client EnableSsl   true  client Send message

User · Answer

How do you send the message   The classes in the System Net Mail namespace  which is probably what you should use  has full support for authentication  either specified in Web config  or using the SmtpClient Credentials property

User · Answer

In my case even after following all of the above  I had to upgrade my project from  net 3 5 to  net 4 to authorize against our internal exchange 2010 mail server

User · Answer

using System Net  using System Net Mail   using SmtpClient smtpClient   new SmtpClient          var basicCredential   new NetworkCredential  username    password         using MailMessage message   new MailMessage                  MailAddress fromAddress   new MailAddress  from yourdomain com              smtpClient Host    mail mydomain com           smtpClient UseDefaultCredentials   false          smtpClient Credentials   basicCredential           message From   fromAddress          message Subject    your subject              Set IsBodyHtml to true means you can send HTML email          message IsBodyHtml   true          message Body     lt h1 gt your message body lt  h1 gt            message To Add  to anydomain com              try                       smtpClient Send message                     catch Exception ex                          Error  could not send the message             Response Write ex Message                       You may use the above code

User · Answer

Set the Credentials property before sending the message

User · Answer

How do you send the message   The classes in the System Net Mail namespace  which is probably what you should use  has full support for authentication  either specified in Web config  or using the SmtpClient Credentials property

User · Answer

How do you send the message   The classes in the System Net Mail namespace  which is probably what you should use  has full support for authentication  either specified in Web config  or using the SmtpClient Credentials property

User · Answer

Ensure you set SmtpClient Credentials after calling SmtpClient UseDefaultCredentials   false    The order is important as setting SmtpClient UseDefaultCredentials   false will reset SmtpClient Credentials to null

User · Answer

using System Net  using System Net Mail   using SmtpClient smtpClient   new SmtpClient          var basicCredential   new NetworkCredential  username    password         using MailMessage message   new MailMessage                  MailAddress fromAddress   new MailAddress  from yourdomain com              smtpClient Host    mail mydomain com           smtpClient UseDefaultCredentials   false          smtpClient Credentials   basicCredential           message From   fromAddress          message Subject    your subject              Set IsBodyHtml to true means you can send HTML email          message IsBodyHtml   true          message Body     lt h1 gt your message body lt  h1 gt            message To Add  to anydomain com              try                       smtpClient Send message                     catch Exception ex                          Error  could not send the message             Response Write ex Message                       You may use the above code

[c#] How can I make SMTP authenticated in C#

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