The accept.txt file lets you name remote hosts and users that you want the IMail Server to accept as "local" hosts and users. IMail Server does this by checking the "from" address in the SMTP conversation and comparing it against the entries in the accept.txt file.
Adding Entries
Enter one IP address , host name, or user per line. Do not use spaces or punctuation.
Examples:
To enter hosts:
mail1.acme.com
mail5.foo.com
To enter users:
fred@mail1.acme.com
bob@mail5.acme.com
The Accept List must have an exact match for the respective host or e-mail address. It does not accept wild cards or partial matches.