It probably needs pointing at your POP and SMTP server ports, and may require further information only you can provide, in order to scan your mail... try clicking the Avast help file and reading a little about the product and it's capabilities...
My Computer
Computer Manufacturer/Model Number
Custom built machine
OS
W7 x64
CPU
Intel Q9300 2.5Ghz Quad LGA775 (Would like Q9650)
Motherboard
Gigabyte GA-EP45T-UD3R (F6 Bios)
Memory
4Gb OCZ Gold 1,333Mhz
Graphics Card(s)
Palit HD4850 O/C Sonic 512Mb DDR3, Dual DViD's
Sound Card
Azalia to twin Samson 50w Studio Monitors
Monitor(s) Displays
Twin Dell (E-IPS) U2311H 23.6" Screens
Screen Resolution
1920 x 1080 @ 60Hz
Hard Drives
Crucial M4 SSD, archives on twin Western Digital Caviar Black WD2002FAEX, 2TB, 7200rpm HDD's, Samsung Ritemaster CD/DVD Burner...
PSU
OCZ 600w
Case
Lian-Li PC8 acoustifoamed' aluminium tower
Cooling
Scythe 140mm Zipang
Keyboard
Cherry PS/2 custom model
Mouse
Lenovo USB laser "Thinkpad" Mouse
Internet Speed
ADSL2+ @14Mbps downstream & Cat6 Gigabit Ethernet
Antivirus
NOD32
Browser
Opera
Other Info
Silicon Dust HD Homerun Dual FTA (Ethernet) TV Tuners, Dray Tek Vigor 2850Vn router and 8x HP Gigabit Switch. Lian-Li CR26 Card Reader, Canon MF4430 iSensys laser printer/scanner.
