Operating system name and version: Fedora 17 for Raspberry PI
Version of smsd: 3.1.15
Smsd installed from:package repository
Name and model of a modem / phone: k550i
Interface: USB

So a bash script used sendsms to put two messages into the spooler, and the log shows them being checked, but then only one is ever sent. What can I do to prevent this in the future?

2014-11-02 20:26:13,5, smsd: Moved file /var/spool/sms/outgoing/send_4gtyqE to /var/spool/sms/checked
2014-11-02 20:26:14,5, smsd: Moved file /var/spool/sms/outgoing/send_Ga3TyD to /var/spool/sms/checked
2014-11-02 20:26:15,3, k550i2: Modem is not ready to answer commands (Timeouts: 0)
2014-11-02 20:26:20,5, k550i1: SMS sent, Message_id: 102, To: ***, sending time 7 sec.