KB Issue

Sometimes, when setting up for CDOSYS, you may set smtpusessl incorrectly. When this happens, your page displays the 'transport failed to connect to the server' error.

Issue Details

When sending mail with CDOSYS, you have to make sure that your SMTP uses SSL, if not, you will experience the following error.

CDO.Message.1 error '80040213'
The transport failed to connect to the server.
/mail.asp, line 24

Recreate Issue[p]In your CDOSYS Mail, you have the following line.

Code Example

myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpusessl") = true

You can see where the end is; we have truth.
If your server sends mail over SSL, this is correct; however, if your mail server does not send over SSL, this is incorrect.

Resolve IssueWith the above code, do one of the following scenarios

Scenario #1: Sending SSL, then change False to True
Scenario #2: Not sending SSL, then change True to False
Scenario #3: If you do not have the line of code in your mail script, you must add it.

You should then be able to send your mail.
Full Working Mail Script

Date: June 24, 2026
Using ASP Classic on Windows Server Core, you are no longer able to use the CDOSYS Email. Your best choice is to do as I have done, and move all my Email scripts over to ASP.NET, either VB or C#.

[Classic ASP - CDO.Message]

CFFCS | CarrzSynEdit: | ASP/VBScript


Set myMail = CreateObject("CDO.Message") 
myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2 'Send the message using the network (SMTP over the network).

myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpserver") ="mail.domain.com"
myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpserverport") = 25
myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpusessl") = false 'Use SSL for the connection (True or False)

myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout") = 60
     
' If your server requires outgoing authentication uncomment the lines bleow and use a valid email address and password.

myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate") = 1 'basic (clear-text) authentication

myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/sendusername") ="webmaster@domain.com"
myMail.Configuration.Fields.Item ("http://schemas.microsoft.com/cdo/configuration/sendpassword") ="********"

myMail.Configuration.Fields.Update

email = "name@somedomain.com"
myMail.To = email
myMail.Subject = "KB Email Confirmation"
myMail.From = "support@domain.com (KB)"

myMail.HTMLBody = "This is line one<br />"
myMail.HTMLBody = myMail.HTMLBody &"This is line 2<br />" 
myMail.HTMLBody = myMail.HTMLBody &"<div style=""text-align:center; vertical-align:top""><blockquote style=""color:#999999;""> KB is A %AEComapny Name Here©2000-"&Year(Now())&" Company</blockquote>" 
myMail.Send
response.Write "Mail Sent Successfully!<br />Check your Inbox for: "&email
     
Set myMail = Nothing