MMS Picture Messaging not working since jailbreak...APN settings?

i can receive picture messages can't send out. i've tried "reset network settings" , didn't help.

settings, i've got...

cellular data
apn: phone
username: blank
password: blank

visual voicemail
apn: acds.voicemail
username: blank
password: blank

mms
apn: wap.cingular
username: blank
password: blank
mmsc: http://mmsc.cingular.com
mms proxy: wireless.cingular.com:80
mms max message size: 1048576
mms ua prof url: blank

these ok? need change , what?

 

anyone?

 

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