Install/Configure

From Joyrex Wiki

Contents 1 Install 2 Config 3 Testing 4 Troublshooting

Install

• Install exim4:

  apt-get install exim4

• Options:
  • If Ubuntu (used on Edgy Eft)
    • No local mail; smarthost
    • local host name
    • mail server host name
  • If Debian (used on Etch)
    • Split configuration
    • mail sent by smarthost; no local mail
    • System mail name: example.com
    • Listen on 127.0.0.1
    • Add other names if necessary
    • Visible domain name: blah.example.com (current server's name)
    • Outgoing Smarthost: mail.example.com (real mail server address)
    • No, do not keep number of DNS queries minimal

Config

• Edit /etc/aliases (if necessary)
  • Good default:

root: YOUR-REAL-ACCOUNT-NAME
postmaster: root
daemon: root
bin: root
sys: root
sync: root
games: root
man: root
lp: root
mail: root
news: root
uucp: root
proxy: root
www-data: root
backup: root
list: root
irc: root
gnats: root
nobody: root
hostmaster: root
usenet: root
news: root
webmaster: root
www: root
ftp: root
abuse: root
noc: root
security: root
mailer-daemon: postmaster

• Run:

  newaliases

• Edit /etc/mailname
• If not already set this way, change entry to the domain (no subdomains, e.g. instead of blah.example.com, use example.com)
• Restart exim4

Testing

• As root:

echo "sending to root" | sendmail root
echo "sending to user" | sendmail USERNAME

• Tail maillog on normal mail server
• Check mail

Troublshooting

• exim4's log (/var/log/exim4/mainlog) is showing: TLS error on connection to MAILHOSTNAME [MAIL SERVER IP] (DH params import): Base64 decoding error.
  • Run:

/etc/init.d/exim4 stop
rm -f /var/spool/exim4/gnutls-params
/etc/init.d/exim4 start