MMS does not work
MMS will not send. It sits at "sending..." and the message will never send. An SMS sent to the same recipient (after trying to send the MMS) will complete and be received.
Tested on 0008-dream, 0009-dream.
Both T-Mobile & AT-T SIM cards are capable of sending MMS on CyanogenMod 7 on Crespo 9020A - it's not network or hardware related.
For my situation I cannot use wifi to send MMS. MMS will only send over EDGE/3G. It is possible that the network is not properly 'flagged' as being able to send MMS - CyanogenMod had an issue with this; I will try to research what that was.