On 2/11/2013 11:13 AM, Nikolaos Milas wrote:
Hello,
I am using Postfix 2.9.4 on CentOS 6.3 as a gateway server with the
following postscreen settings:
postscreen_dnsbl_threshold = 2
postscreen_dnsbl_sites =
b.barracudacentral.org*2,
zen.spamhaus.org*2,
psbl.surriel.com*2
postscreen_dnsbl_action = enforce
postscreen_greet_action = enforce
Sometimes I receive complaints from some mail server operators that
barracudacentral causes blocks of mail from their server, and "Very
few email providers use Barracuda for their RBL's, so it is not an RBL
we check very often or rely on".
I remember that, when I had set up this gateway server, I had
researched and found that barracudacentral should be OK.
My questions now are:
* Based on your experience and advice, should I keep the above
postscreen settings? Any suggestions?
* Should I avoid postscreen_dnsbl_sites and only use amavis to make
decisions through scoring? How are you implementing such blocks?
Thanks in advance,
Nick
Barracuda and Spamhaus are the only RBLs that I use that can block by
themselves. All others require at least one corroborating RBL. I've not
run into any issues. I'd suggest that if their response is what you
quoted they need to be more concerned about why they are being listed
than telling others not to use them. Of course, that tells me they
probably already know why they are listed and choose not to correct the
behavior that caused the listing.
