Sending e-mail via CDO due to "Transport failed to connect to the server"

Hi everybody,

with the help of the on-line documentation I wrote the following code to send an e-mail using CDO.

function SendEmail(mFrom, mTo, mSubject, mBody)
{
var schema, mConfig, mMessage;

try
{
schema = "http://schemas.microsoft.com/cdo/configuration/";

mConfig = getActiveXObject("CDO.Configuration");

mConfig.Fields.$set("Item", schema + "sendusing", 2); // cdoSendUsingPort
mConfig.Fields.$set("Item", schema + "smtpusessl", 1); // Use SSL
mConfig.Fields.$set("Item", schema + "smtpserver", "smtp.gmail.com"); // SMTP server
mConfig.Fields.$set("Item", schema + "smtpserverport", 465); // Port number (tried to use 587 and 25 port)
mConfig.Fields.$set("Item", schema + "smtpconnectiontimeout", 180); // Port number (I think 180 are seconds)

mConfig.Fields.$set("Item", schema + "smtpauthenticate", 1); // Authentication mechanism

mConfig.Fields.$set("Item", schema + "sendusername", mFrom);

mConfig.Fields.$set("Item", schema + "sendpassword", "<myPassword>");

mConfig.Fields.Update();

mMessage = getActiveXObject("CDO.Message");
mMessage.Configuration = mConfig;
mMessage.From = mFrom;
mMessage.To = mTo;
mMessage.Subject = mSubject;
mMessage.HTMLBody = mBody;

// no attachment

//aqString.ListSeparator = ",";
//for(let i = 0; i < aqString.GetListLength(mAttach); i++)
// mMessage.AddAttachment(aqString.GetListItem(mAttach, i));

mMessage.Send();
}
catch (exception)
{
Log.Error("Email cannot be sent", exception.message);
return false;
}
Log.Message("Message to <" + mTo + "> was successfully sent");
return true;
}

When the send command is executed, an exception is thrown. The message written in the exception is: "The transport failed to connect to the server".

The mFrom address is a gmail address and for this address has been enabled that less secure apps can access.

I read also this post https://community.smartbear.com/t5/TestComplete-Functional-Web/SendMail-not-working-Tried-everything-I-found-in-documentation/td-p/182944/page/2

No solutions have been found. The port (465) isn't block by workstation or IT firewall because I can access to my gmail.

Any suggestions or help?

Thank you very much,

Andrea