Ubuntu Email setup

POSTFIX

• apt-get install postfix

Config POSTFIX

• dpkg-reconfigure postfix
  • Configuration: Internet Site
  • System mail name: (Your machines FQDN - fully qualified domain - name goes here)
    • Example: host.cs.uwaterloo.ca
  • Root and postmaster mail recipient: (userid of account to receive root and postmaster email)
  • Other destinations to accept mail for: (make sure this includes the FQDN and local domain names)
    • Example: host.cs.uwaterloo.cs, host.cs, localhost.cs, localhost
  • Force synchronis updates on mail queue: No
  • Local Networks: localhost (Relay Networks leave as localhost unless you relay email bad idea!)
  • Mailbox size limit: 0
  • Local Address extention character: +
  • Internet Protocol to use: ipv4

EXIM4

http://www.exim.org/

Ubuntu 8.10 email setup

• Become root: sudo bash
• apt-get install dovecot exim4
• dpkg-reconfigure exim4-config
  • Internet site; mail is sent and received directly using SMTP
  • Full hostname, example swag-new.cs.uwaterloo.ca
  • IP-addresses to listen on for incoming SMTP connections from anywhere: 127.0.0.1 (ie. local SMTP ONLY)
    • -OR- for full mail servers that receive from anywhere you need to LEAVE BLANK
  • Other destinations for which mail is accepted: If there are alternate host names enter them here
  • Domains to relay mail for: LEAVE BLANK
  • Machines to relay mail for: LEAVE BLANK
  • Keep number of DNS-queries minimal (Dial-on-Demand)? No
  • Delivery method for local mail: mbox format in /var/mail/
  • Split configuration into small files? No
• /etc/dovecot/dovecot.conf changes
  • protocols = imaps
  • mail_location = mbox:~/mail:INBOX=/var/mail/%u
• /etc/init.d/dovecot restart

• You are done!

Relaying

• If you do put something in the "Machines to relay mail for" question put only individual machines like mxer.uwaterloo.ca or 129.97.152.0/24 (for CS machines)

Debugging

• Download and Install a GUI Exim4 Monitor
  • apt-get install geximon
• Notes: This tool will let you see all of the transactions that happen when email is sent,received,forwarded

Smarthost setup using mail.cs.uwaterloo.ca

• apt-get install exim4
• dpkg-reconfigure exim4-config
  • Mail Server configuration -> OK
  • mail sent by smarthost; received via SMTP or fetchmail -> OK
  • System mail name: (put in our full name with the uwaterloo.ca part included) -> OK
  • Read note about listening IP addresses -> OK
  • IP-addresses to listen on for incoming SMTP connections from anywhere: 127.0.0.1 (ie. local SMTP ONLY)
    • -OR- for full mail servers that receive from anywhere you need to LEAVE BLANK
  • recipient domains (put in our full name with the uwaterloo.ca part included) -> OK
  • Machines to relay mail for: (LEAVE BLANK) -> OK
  • IP address or host name of the outgoing smarthost: mail.cs.uwaterloo.ca -> OK
  • Hide local mail name in outgoing mail? NO
  • Read note about DNS lookups -> OK
  • Keep number of DNS-queries minimal (Dial-on-Demand)? NO
  • Delivery method for local mail: mbox format -> OK
  • Split configuration into small files? NO