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Introduction to the Appies E-mail System

Introduction to the Appies E-mail System

The Appies E-mail system is a very robust and powerful solution that gives users a variety of options for sending and receiving e-mail.  With an Appies server a user can

  • send mail through SMTP
  • receive mail through POP
  • send mail through scripts using Sendmail
  • create aliases for any domain/subdomain name used
  • create autoresponders
  • create list accounts - single addresses that forward to more than one e-mail account
  • implement powerful spam filters that stop spam before it is stored on the server
  • use dump accounts
  • and more...

Be sure to review the chapter "Setting Up E-mail" for e-mail lingo and an introduction to using the POP and SMTP servers.

Sendmail. Most in the industry agree that Sendmail is the most powerful e-mail solution in use. Sendmail has been used since the introduction of the Internet and continues to be one of the most popular software packages on the Internet. Sendmail is located on server at


This is the path you would use in any scripts calling Sendmail.

Appies uses a slightly modified version of Sendmail that controls and limits unauthorized relay.  What this means, is that only customers with POP accounts on the server can use the SMTP server to send mail. This is done by POP authentication which is checking your POP account first before Sendmail e-mail.  Most e-mail clients have an option you can select for this to be done automatically.

Procmail. Procmail is part of the e-mail system that is used for autoresponders and spam filters.  It is used by Sendmail to filter incoming e-mail and based on the rules in the .procmailrc files deliver or delete the mail.  Appies builds these cryptic recipes for you, the average user should have no need to manually edit a .procmailrc file. 

 Technical Note...

Users can bypass the Appies mail system and use their own mail server even though they are using the same domain for a Web hosting solution on an Appies server. This is done by changing the MX record destination in the DNS Service tool.

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