Exim

From CLUG Wiki

Contents 1 Gotchas 2 Anti-SPAM 3 Anti-Virus 3.1 Debian

Gotchas

Always remember to turn off ident callouts, as they have no place in the modern world

rfc1413_query_timeout = 0s

In debian, this is located in /etc/exim4/conf.d/main/02_exim4-config_options

Anti-SPAM

• Andy's page on exim anti-spam

Anti-Virus

Debian

sh# mkdir /etc/exim4/local.d/

sh# cat > /etc/exim4/local.d/clamav
# Unpack MIME containers and reject file extensions
# used by worms. Note that the extension list may be
# incomplete.
deny  message = $found_extension files are not accepted here. They tend to be dodgy...
      demime = com:vbs:bat:pif:scr

# Reject messages that have serious MIME errors.
# This calls the demime condition again, but it
# will return cached results.
deny  message = Serious MIME defect detected ($demime_reason). I won't accept that sort of message...
      demime = *
      condition = ${if >{$demime_errorlevel}{2}{1}{0}}

# Reject messages containing malware.
deny message = This message contains malware ($malware_name). We don't do that kind of stuff...
      demime = *
      malware = *

• Set CHECK_DATA_LOCAL_ACL_FILE to /etc/exim4/local.d/clamav in conf.d/main/05_clamav

How to get the vacation driver to work

vacation:

 driver = accept
 check_local_user
 require_files = $home/.vacation.msg
 transport = vacation_transport
 unseen

vacation_transport:

    driver = autoreply
    file = $home/.vacation.msg
    file_expand
    from = $local_part@$domain
    to = $sender_address
    subject = Re: Out of office auto-reply [$local_part@$domain]