problem with mails sent through SO_NEW_DOCUMENT_ATT_SEND_API1

Hi everybody,

Recently I have had a problem with mails sent using SO_NEW_DOCUMENT_ATT_SEND_API1. Some months ago they were sent as usual and we received them correctly: with their subject, message and from people who where sending them. But now, I have a problem with the message, which comes as an attachment and I have to open the file in order to see the message with my lotus notes mail application. I don't know if this is a problem related with any change in SAP configuration or maybe in the mail server. I would like to know if you have heard about this before and if there is any way to solve it quickly.

Thanks in advance.