## Recommended Preparations

The following questions might arise when starting practical work:

• What are:

• MTA

• MDA

• MUA

• The difference between MBOX and Maildir

• What is SASL and where do we use it?

• What advantages and disadvantage are to be considered when running Postfix in a chroot environment?

• Which purposes are being addressed by the configuration files master.cf and main.cf?

• What are local and virtual domains?

• What do smtpd_*_restrictions account for?

• What is an open relay?