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smtp.cfg
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smtp.cfg
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# vim:ts=4:sts=4:sw=4:et
#
# Author: Hari Sekhon
# Date: 2017-12-20 18:40:20 +0000 (Wed, 20 Dec 2017)
#
# https://github.com/HariSekhon/HAProxy-configs
#
# License: see accompanying Hari Sekhon LICENSE file
#
# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
# https://www.linkedin.com/in/HariSekhon
#
# ============================================================================ #
# H A P r o x y - S M T P
# ============================================================================ #
# run as root to bind to port 25
frontend smtp
description "SMTP"
bind *:25
mode tcp
option tcplog
default_backend smtp
backend smtp
description "SMTP"
balance leastconn
mode tcp
acl internal_networks src 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 127.0.0.1
tcp-request content reject if ! internal_networks
option smtpchk
#server office365 smtp.office365.com:587 check
server smtp smtp:25 check
server mail mail:25 check
server docker docker:25 check
server 192.168.99.100 192.168.99.100:25 check