A list of UIDs which are allowed to send mail.
A list of GIDs which are allowed to send mail.
A list of UIDs which are not allowed to send mail.
A list of GIDs which are not allowed to send mail.
True if access will be allowed when no other access control
rule matches or False if it will be denied in that case. (type: bool)
Either 'allow' to check allowUID first or
'deny' to check denyUID first.
Either 'allow' to check allowGID first or
'deny' to check denyGID first.
A dict mapping hostnames to credentials to use when sending
mail to that host.
None or a hostname through which all outgoing mail will be
sent.
None or the hostname with which to identify ourselves when
connecting to an MTA.