how to set the From field in an email - xpages

Question

If I send an email from javascript, the email arrives at the destination address with the "From" field containing Anonymous%<Notes domain>#Company.com. I tried setting the fields "reply-to", "return-path", "From", "Sender", & "Principal" with what I want to appear in the "From" field.
But that often results in a bounce-back message because, I believe, it looks like the "From" address is being spoofed (which is actually is but for a good cause!). How can I modify the "From" field?
Here's the code using mail.box that's throwing the error:
function sendTestEmail(emailAddr){
print("enter sendTestEmail function");
print("emailAddr: "+emailAddr);
var mailboxdb:NotesDatabase = sessionAsSigner.getDatabase("<server>", "mail.box");
var emaildoc:NotesDocument = mailboxdb.createDocument();
emaildoc.replaceItemValue("form", "Memo");
emaildoc.replaceItemValue("sendTo", emailAddr);
emaildoc.replaceItemValue("subject", "testing email");
var body:NotesRichTextItem = emaildoc.createRichTextItem("body");
body.addNewLine();
body.appendText(" testing from javascript. ");
emaildoc.replaceItemValue("SMTPOriginator", "support#abc.com");
emaildoc.replaceItemValue("From","\"support#abc.com\" <support#abc.com>");
emaildoc.replaceItemValue("Principal","\"support#abc.com\" <support#abc.com>");
emaildoc.save(true, false);
print("exiting sendTestEmail function");
}

Answer 1

Copy the mail into server's database mail.box instead of sending it and set fields "Principal" and "From" to your alternative address.
Have a look at this answer too.

Answer 2

Set the SMTPOriginator field to the address it should be from. You might still need to populate the From, Sender and Principal as well.

Answer 3

Just another idea, because to me the mail.box idea should be a last resort approach.
If the mail is always to be sent by the same person (e.g. support), you could prepare a draft mail somewhere, for instance in your current database, and have a signed, scheduled agent (LS, Java) that sends the mails out.
I once used a special Extension Manager DLL to rename certain fields in outgoing mails, but I'm not going to propose that idea here...