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# Sagan postfix.rules
# Copyright (c) 2009-2017, Quadrant Information Security <www.quadrantsec.com>
# All rights reserved.
#
# Please submit any custom rules or ideas to sagan-submit@quadrantsec.com or the sagan-sigs mailing list
#
#*************************************************************
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
# following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
# disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
# following disclaimer in the documentation and/or other materials provided with the distribution.
# * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#*************************************************************
#alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[POSTFIX] IP Address black-listed by anti-spam [blocked]"; content: "blocked using"; default_proto: tcp; default_dst_port: $SMTP_PORT; default_proto: tcp; default_dst_port: $SMTP_PORT; classtype: spam; program: postfix; reference: url,wiki.quadrantsec.com/bin/view/Main/5000225; sid: 5000225; rev:3;)
#alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[POSTFIX] Processing error"; pcre: "/defer service failure|resource temporarily unavailable/i"; default_proto: tcp; default_dst_port: $SMTP_PORT; default_proto: tcp; default_dst_port: $SMTP_PORT; classtype: program-error; program: postfix; reference: url,wiki.quadrantsec.com/bin/view/Main/5000226; sid: 5000226; rev:3;)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[POSTFIX] SASL authentication failure"; content: "authentication failed"; default_proto: tcp; default_dst_port: $SMTP_PORT; default_proto: tcp; default_dst_port: $SMTP_PORT; classtype: unsuccessful-user; program: postfix; reference: url,wiki.quadrantsec.com/bin/view/Main/5000227; sid: 5000227; rev:3;)
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