exim -bhc 1.2.3.4

**** SMTP testing session as if from host 1.2.3.4
**** but without any ident (RFC 1413) callback.
**** This is not for real!

>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? yes (matched "*")
>>> looking up host name for 1.2.3.4
>>> IP address lookup using gethostbyaddr()
>>> IP address lookup failed: h_errno=1
LOG: no host name found for IP address 1.2.3.4
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
220 mx3.marcotests.at ESMTP Exim 4.63 Mon, 06 Nov 2006 13:56:04 +0100

# 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)
demime = *
condition = ${if >{$demime_errorlevel}{2}{1}{0}}

# Reject messages containing malware.
# Reject after DATA
#
deny message = This message contains a virus ($malware_name) and has been rejected
demime= *
malware = *

# Reject typically wormish file extensions. There is almost no
# sense in sending such files by email.
deny  message = This message contains an unwanted file extension ($found_extension)
      demime = scr:vbs:bat:lnk:pif:bz2:exe:com