diff options
| author | Micah <micah@leap.se> | 2015-10-27 15:27:24 -0400 |
|---|---|---|
| committer | Micah <micah@leap.se> | 2015-11-02 10:19:48 -0500 |
| commit | ed1ff6fa01bf110fc338b7116fdf577aa88a8d46 (patch) | |
| tree | 0a9650f4e7b2e25cf879e8236c9b96d4e9ad9454 /puppet/modules/postfwd/templates/postfwd.cf.erb | |
| parent | e97a9d3800b173375a630e18e4b1aa0894eb96e1 (diff) | |
Add initial rate-limiting for outgoing SMTP, using postfwd (#5972)
Change-Id: I6a6e68908b71d7499eb3ef3c7f0173b3d5b7baa2
Diffstat (limited to 'puppet/modules/postfwd/templates/postfwd.cf.erb')
| -rw-r--r-- | puppet/modules/postfwd/templates/postfwd.cf.erb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/puppet/modules/postfwd/templates/postfwd.cf.erb b/puppet/modules/postfwd/templates/postfwd.cf.erb new file mode 100644 index 00000000..6460994a --- /dev/null +++ b/puppet/modules/postfwd/templates/postfwd.cf.erb @@ -0,0 +1,31 @@ +### This file managed by Puppet +# Before deploying a rule +# 1. test with an additional "sender==test@domain.org;" in the rule so it +# only applies to your test account +# 2. then when ready to test for all users, use WARN and watch the logs +# for a few days and make sure it working the way you like +# 3. Then when ready to deploy for real set a proper error code + +## Overrides - make like the following example +# id=exampleuser; sasl_username==exampleuser; action=dunno + +## Rules that apply to all senders +# Recipient Per Message Limit +# We only receive mail via smtp from sasl authenticated users +# directly. We want to limit to a lower amount to prevent phished accounts +# spamming +id=RCPTSENDER; recipient_count=150; action=REJECT Too many recipients, please try again. Contact http://<%= @domain %>/tickets/new if this is in error. ERROR:RCPTSENDER + +# Message Rate Limit +# This limits sasl authenticated users to no more than 50/60mins +# NOTE: sasl_username needs to be set to something or this check will fail +id=MSGRATE ; sasl_username=!!(^$); action==rate($$sasl_username/100/3600/450 4.7.1 exceeded message rate. Contact Contact http://<%= @domain %>/tickets/new if this is in error. ERROR:MSGRATE) + +# Total Recipient Rate Limit +# This adds up the recipients for all the sasl authenticated users messages +# and can't exceed more than 250/60min +# NOTE: sasl_username needs to be set to something or this check will fail +id=RCPTRATE ; sasl_username=!!(^$); action==rcpt($$sasl_username/500/3600/450 4.7.1 exceeded message rate. Contact http://<%= @domain %>/tickets/new if this is in error. ERROR:RCPTRATE) + +# Size per client Limit +id=SENDSIZE ; state==END_OF_DATA ; client_address==!!(10.0.1.0/24); action==size($$client_address/314572800/3600/450 4.7.1 Sorry you have sent too much data. Contact http://<%= @domain %>/tickets/new if this is in error. ERROR:SENDSIZE) |