Here are some tips, which may help you to use the program more efficiently.

●Increasing the number of scanning threads speeds up the checking, but also increases the network traffic. See the “General settings” section.

●If “direct delivery” option is used, the following problem may appear: the address, which doesn’t exist in DNS, will not be labeled as “bad one”. See the “DNS settings” section.

●If non-existing or somebody else's domain is specified for HELO, there is a chance that the mail server will return the wrong result, i.e. mark the address as nonexistent one. See the “SMTP settings” section.

●Using filtering, you can control the contents of output file. For example, it may contain only "bad" addresses. See the “Filtering” section.

●If you want to verify the admin mailbox on smtp.enet.ru mail server, take advantage of special syntax admin@[smtp.enet.ru]. See "Mailing lists formats" section.