Maxis* has temporarily blocked all SMS with alphanumeric SenderID** going into their network since evening of 4th August, 2007 (GMT +8).

Customers are advised to change their existing SenderID (eg. ABC) to some numbers (eg. 0312345678 or  0123456789) in order for SMS to reach Maxis nextwork.

[ Update 2008-02-28: Not all numeric numbers are accepted by Maxis. We have to change the sender ID to something like +38000000xx in order to get pass their filtering ]

* Maxis is one of the 3 major celcos operate in Malaysia, responsible for mobile phone number with prefix of 012, 017 and 0142.

** SenderID, the "From" field while composing SMS at AVO.