Short description of RelayTest 2.4.3: RelayTest Pro is a tool for network administrators, that allows to test a specified mail server for open relays. It runs series of tests designed to detect open relays and create a detailed report of the findings. The test data can be automatically updated from the web to catch-up with the latest tricks used by spammers. RelayTest Pro is not designed to find vulnerable mail servers - it only scans one server at a time.