## mailfront

# Plugin: check-fqdn

## Configuration

`$DEFAULTDOMAIN`
  If set, the contents of this variable are appended to all sender or recipient addresses that have a partial host name (missing at least one "`.`"). (no default)
`$DEFAULTHOST`
  If set, the contents of this variable are appended to all sender or recipient addresses that are missing a host name. (no default)
`$SENDER_DOMAINS`
  A colon-separated list of domains to restrict the sender.

## Sender Action

If the sender address is not empty and it either contains no "`@`" or contains no "`.`" in the part of the address following the "`@`", the address is rejected. Otherwise no action.

## Recipient Action

Same as the sender action, with no exception for empty addresses.

## Data Action

None

## Message Action

None