On 06/25/2010 06:26 PM, Genes MailLists wrote: > On 06/25/2010 05:56 PM, Greg Woods wrote: > > > Historical thoughts on RBL: > > You've had several suggestions so just a couple of comments. The > MAPS list (aka rbl) was an/the original DNSBL - if I remember right it > went weird a long back and required you fill out a long legal doc (with > a pen) which if your IP ever changed you needed to do the entire thing > over again. There was a 'free' and a pay service. > > It got too tedious to be useful - since then Trend Micro purchased > them and now sells the service - what is still easily accessible I dont > know. > > The current way is to use the FEATURE(`enhdnsbl'). Many of these > lists share a huge overlap in common - so adding the first RBL is a huge > benefit - thereafter you may find little to no further benefit for each > additional RBL you add. There is some cost to adding them tho' smallish > for a home / small business site. > > > Here are some of the things I do (feel free to ignore!) ... for me > spam is not zero but but it mostly quiet - every now and again I get a > new spurt of a few a week then it goes quiet again. > > > 1) FEATURE(`enhdnsbl', `bl.spamcop.net', `', `t', `127.0.0.2.')dnl > > 2) FEATURE(`greet_pause', `3000')dnl > I found 3 secs to work well for me you may tune as you see fit. > > ** 3) FEATURE(`block_bad_helo') dnl > ** 4) FEATURE(`require_rdns') dnl > > 5) Maintain access list - > - mine contains (large) number of netblocks > - use senderbase to help identify netblocks and get more info > about IP's. > http://www.senderbase.org > - only look at the last Received line hitting your mail server > > You may choose what you want to block here - e.g. residential IP's > > > 6) I have also iptable Firewall blocks for undesirables (I use some > country blocks in addition to a list of naughties) > > 7) run spamassasin (at the back end not the border server if you're > running internal and border sendmails). > > Good luck ... :-) > > gene > > > ** you will need FEATURE(delay_checks)dnl > as well. > THANKS! I have implemented the above recommendations as well as a few other advices in this posting. Thanks to all who participated - all very interesting to know how others have tackled the their spam issues. I will report how it all goes for me as I was getting at least 250 spam messages a day... it was getting on my nerves :/ -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
