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By default installs without dreaded open-relay mode, so the server is safe from abuse. In order to allow outside users to validly relay
they must either use POP_BEFORE-SMTP (login with POP or IMAP first) or SMTP-AUTH (login to SMTP).
In order to allow outside users to validly relay they can use POP_BEFORE-SMTP (login with POP or IMAP first). This validates the ip-address
used for up to 15 (config settable) minutes.
In order to allow outside users to validly relay they can use SMTP-AUTH (login to SMTP first). SMTP-AUTH users can also have different
size/rcpt limit applied. Valid client software can also log in using CRAM-MD5 security which doesn't transmit a password (like POP3 APOP).
Can optionally and automatically BCC all outgoing mail to a nominated account or address. Use for child / employee / account monitoring
or for statistical or research purposes, or just fill up your hard-drive for the fun of it.
The ability to put tags on your email address as you give it out in order to identify any responses. For example, if you need to
give out an address on a web-form signup page at domain 'somecompany.com', use an address like: 'userid+somecompany.com@mydomain'.
The mail will still be delivered to 'userid@mydomain' but you can use the tag 'somecompany.com' to identify the response (and perhaps
use filtering rules on it). Also, if you start getting SPAM with that tag on your address then you know that 'somcompany.com' has sold
your address.
A gateway domain is one that is accepted by the SMTP server (because DNS MX or A records pointed it here), but the message is immediately
requeued for delivery elsewhere. The ultimate destination is determined then by local criteria. A port can be specifed when a gateway
domain is declared, meaning that delivery to the destination server will be on that port. This allows for a store and forward service
with port forwarding.
Bounded domains are domains where users can only send mail to, or receive mail from, other members of the same domain. This makes it
ideal for clubs, organizations, socities etc. that can hand out addresses and not be bothered by a) outsiders butting in,
b) members recieving SPAM, or c) members abusing their privilege to send SPAM.
Spamfoil is a password protection system on mail accounts. In order for the recipient to accept mail the subject header must
contain a nominated password (or keyword) in it somewhere, otherwise the message is rejected. Obviously, in order to use this,
the recipient must have told beforehand all the people they communicate with the password to use. The idea is to reject SPAM and other
unsolicited mail.
Periodically poll external POP or IMAP accounts for new mail and download to your local account. When to poll can be set on a periodic
basis (eg. every 'n' minutes) or at specific times of the day.
Account holders can have their own personal web and ftp accessible space, accessed like:
http://domain/~userid
under this they can use FTP to create their own directories and store web content.
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