Bypass RBL for authenticated user
Posted: Wed Aug 21, 2019 6:50 am
Hi,
I cannot find an actual solution for this anywhere.
I have some uesrs who use ISP's who list their customer DHCP IP's in spamhaus, etc. All users are required to authenticate to send messages through the server, however users on these IP ranges have their submissions rejected based on RBL lookup. An example from the log file:
I've tried adding the public IP to the "white-blocks.conf" file with no success. This would be difficult to manage anyway, as the offending addresses change daily.
Any suggestions on how to permit authenticated users to send from RBL blocked addresses?
Thanks,
Twoup.
I cannot find an actual solution for this anywhere.
I have some uesrs who use ISP's who list their customer DHCP IP's in spamhaus, etc. All users are required to authenticate to send messages through the server, however users on these IP ranges have their submissions rejected based on RBL lookup. An example from the log file:
Code: Select all
2019-08-20 15:39:19 H=<CUSTOMER HOSTNAME> ([192.168.0.26]) [<PUBLIC IP>] X=TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 CV=no F=<[email protected]> rejected RCPT <[email protected]>: Rejected because <PUBLIC IP> is in a black list at zen.spamhaus.org
Any suggestions on how to permit authenticated users to send from RBL blocked addresses?
Thanks,
Twoup.