I have had a similar problem. Mobile texting was working fine then
suddenly stopped. The problem was that the the receiver's alert
settings were defaulting to their phone carriers default for
allowed alerts(messages) per month , which was 100. We adjusted
that number up and the messaging started working again.
To adjust, the receiver of the messages logs into
http://mobile.msn.com
then change alert delivery settings
Alerts
Get notified when stock prices change, your favorite team wins,
and more!
Change MSN Alerts
Change alert quiet times
Change alert delivery settings <<<<<<<<<
Alert delivery settings
Configure the following settings to personalize how MSN Mobile
will deliver alerts to your device. Alert delivery
Use this option to turn alerts on or off.
On
Off
Long alerts
Choose what to do with alerts that are longer than your phone will
display.
Send what fits in one alert
Split into multiple alerts
Max messages per month
Choose the maximum number of messages you would like to receive
from MSN per month.
Use my carrier's default (100)
Send me up to messages per month. <<<<<<<<<<<<