On 3/1/2012 11:42 AM, Brian Evans - Postfix List wrote: > On 3/1/2012 11:49 AM, Alex wrote: >> Hi, >> >>>> I had thought it was related, but another issue I'm trying to figure >>>> out is how to prevent a single remote server from sending thousands of >>>> messages at a time, filling the queue, and causing significant >>>> delivery delays for all mail. >>> Is it safe to assume these thousands of messages are spam, and not legit >>> mail? If so, simply block the IP address(es) in a cidr table: >>> >>> smtpd_recipient_restrictions >>> permit_mynetworks >>> reject_unauth_destination >>> check_client_access cidr:/etc/postfix/blacklist.cidr >>> ... >>> >>> /etc/postfix/blacklist.cidr >>> #single IP >>> 10.10.10.10/32 REJECT high rate spammer >>> #class C network >>> 10.10.10.0/24 REJECT snowshoe spammer >>> >>> If it's legit mail, anvil typically takes care of rate throttling, IIRC. >>> Need more info. What version of Postfix are you using again? >> Yes, it is for legit mail, such as that from constantcontact and other >> bulk mailers that overwhelm my servers and upset my users who want >> their more important mail. > > Perhaps you would like to rate limit certain IPs? > If so, you could apply the above map and, instead of rejecting, perform > a check_policy_service action along with something like Postfwd. > > A policy server could also be global depending on your needs.
I just fired an email to another list where a few Constant Contact folks have been known to participate. A member (non CC) already responded with their outbound range. Active hosts list within the range after my sig. 208.75.123.0/24 I also offered to put CC in contact with Alex if this rate issue might be better addressed on their end. -- Stan 208.75.123.1 coi001.confirmedcc.com 208.75.123.2 coi002.confirmedcc.com 208.75.123.3 coi003.confirmedcc.com 208.75.123.103 coi103.confirmedcc.com 208.75.123.130 ccm22.constantcontact.com 208.75.123.131 ccm23.constantcontact.com 208.75.123.132 ccm24.constantcontact.com 208.75.123.133 ccm25.constantcontact.com 208.75.123.134 ccm134.constantcontact.com 208.75.123.135 ccm135.constantcontact.com 208.75.123.161 ccm26.constantcontact.com 208.75.123.162 ccm27.constantcontact.com 208.75.123.163 ccm38.constantcontact.com 208.75.123.164 ccm39.constantcontact.com 208.75.123.165 ccm165.constantcontact.com 208.75.123.166 ccm166.constantcontact.com 208.75.123.167 ccm167.constantcontact.com 208.75.123.168 ccm168.constantcontact.com 208.75.123.169 ccm169.constantcontact.com 208.75.123.170 ccm170.constantcontact.com 208.75.123.193 ccm33.constantcontact.com 208.75.123.194 ccm34.constantcontact.com 208.75.123.195 ccm35.constantcontact.com 208.75.123.196 ccm36.constantcontact.com 208.75.123.197 ccm197.constantcontact.com 208.75.123.198 ccm198.constantcontact.com 208.75.123.200 ccm200.constantcontact.com 208.75.123.201 ccm201.constantcontact.com 208.75.123.202 ccm202.constantcontact.com 208.75.123.225 ccm29.constantcontact.com 208.75.123.226 ccm30.constantcontact.com 208.75.123.227 ccm31.constantcontact.com 208.75.123.228 ccm32.constantcontact.com 208.75.123.245 mail245.nutshellmail.com 208.75.123.250 ccm37.constantcontact.com
