SQL & PL/SQL :: UTL_SMTP.DATA / Why Body Of Email Is Missing

I have a procedure called SANDEEP_INC105657, which calls another procedure called "Send_Prodcontrol_Mail_Pr". This procedure should be sending out an email with the following message:

From: <sandeep.tanjore@xxx.xx.ca>
Subject: Remit Advice Slips Report (TR000336).
To: sandeep.tanjore@xxx.xx.ca
Report TR000336 - Remit Advice Slips.

Total number of records that needs slips printed are: 1

However what's happening is we had a database change from 10g to 11g and ever since this has happened the email is sent with "From", "Subject" and "To" but the body(content of the email : Total number of records that needs slips printed are: 1) is missing.The code in Send_prodcontrol_Mail_pr is as follows:

CREATE OR REPLACE PROCEDURE Send_Prodcontrol_Mail_Pr( v_mailhost IN VARCHAR2,
v_sender IN VARCHAR2,
v_recipient IN VARCHAR2,
v_subject IN VARCHAR2,
v_message1 IN VARCHAR2,
v_message2 IN VARCHAR2,
v_message3 IN VARCHAR2)
[code]....

Any reason why the body of the email is missing? I tried the following:

replaced utl_smtp.data(mail_conn,mesg); with utl_smtp.write_data(mail_conn, utl_tcp.CRLF||mesg);

It sends out the email as required but it repeats the "From" two times with no "TO", and "Subject"... however then embeds the whole "from" "to" and the body in an email.