I'm on the last stable release working great on CentOS servers. No issue by the sending side. Problem seems to appear suddenly, after a couple of months or so, on the incoming side.
I use to receive messages on one modem in particular (talking about 1000 per month) and it stops without any way to soft recovery.
The odd thing is that i'm still able to send messages with the modem itself etiher, or with other modem of the pool, but no way to receive them.
Any ideas? Any help appreciated.