Server rejects access

My host said that every file transferred using the queue is opening one FTP connection. After 300 connections I am shut down for 30 minutes. What can I do to have FTP only open one connection for each worker.

Here is the firewall log
Thu Mar 22 18:34:16 2007 lfd: (CT) IP 70.146.157.6 found to have 283 connections - *Blocked in csf* for 1800 secs
Thu Mar 22 18:34:16 2007 lfd: (CT) alert email sent for 70.146.157.6
Thu Mar 22 18:34:21 2007 lfd: (CT) IP 70.146.157.6 found to have 284 connections - *Blocked in csf* for 1800 secs
Thu Mar 22 18:34:21 2007 lfd: (CT) alert email sent for 70.146.157.6
Thu Mar 22 18:34:26 2007 lfd: (CT) IP 70.146.157.6 found to have 248 connections - *Blocked in csf* for 1800 secs
Thu Mar 22 18:34:27 2007 lfd: (CT) alert email sent for 70.146.157.6
Thu Mar 22 18:34:31 2007 lfd: (CT) IP 70.146.157.6 found to have 210 connections - *Blocked in csf* for 1800 secs
Thu Mar 22 18:34:31 2007 lfd: (CT) alert email sent for 70.146.157.6
Thu Mar 22 18:34:37 2007 lfd: (CT) IP 70.146.157.6 found to have 217 connections - *Blocked in csf* for 1800 secs
Thu Mar 22 18:34:37 2007 lfd: (CT) alert email sent for 70.146.157.6
Thu Mar 22 19:05:03 2007 lfd: (CT) unblocked 70.146.157.6


+- System -----------------------------
Microsoft Windows XP Home Edition
Service Pack 2 (Build 2600)

CPU Speed : 1729 MHz
Total Memory : 1015 MB
Free Memory : 299 MB

+- SmartFTP ---------------------------
Version : 2.0.1002.2
Time Stamp : 2007-01-23 04:21:49
Platform : x86

+- Application DLL --------------------
sfFTPLib.dll : 1.5.9.5
SmartHook.dll : 1.0.2.1

+- Language ---------------------------
SmartFTP.exe : 2.0.1002.2

+- System DLL -------------------------
shell32.dll : 6.00.2900.3051 (xpsp_sp2_gdr.061219-0316)
shlwapi.dll : 6.00.2900.3059 (xpsp_sp2_qfe.070104-0040)
comctl32.dll : 6.0 (xpsp.060825-0040)
riched20.dll : 5.30.23.1228
schannel.dll : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)

+- Internet Explorer ------------------
Version : 7.0.5730.11

+- Winsock ----------------------------
Winsock : 2.2

Hello ..

Each worker opens exactly one connection (unless you do a Server-To-Server transfer). Set the maximum number of Workers per Site to 1 in the Favorite settings. Also make sure that the "Reuse Connection" option is enabled in the Menu: Tools->Settings->Queue settings.

Regards,
-Mat