Look at one of the emails sent that end up in the spam and check the header information.
Compare it to a message header that does not end up in the spam and change your header from VB to match the ones that are not flagged.
Look at one of the emails sent that end up in the spam and check the header information.
Compare it to a message header that does not end up in the spam and change your header from VB to match the ones that are not flagged.