I have Tmobile USA and after applied your setting I got errors following: MMSC REPLIED:504_Gateway_Timeout Body:<html> <head> <title>Error 504 Gateway Timeout</title> <head> <body> <h2>HTTP ERROR: 504</h2><pre>Gateway Timeout</pre> <p>RequestURI=http://mms.msg.eng.tmobile.com/mms/wapenc</p>