>-----Message d'origine----- >De: [EMAIL PROTECTED] >A: [email protected] >Date: 25/04/08 10:33 >Objet: [xmail] Re: Lockdown xMail > >At 06.45 25/04/08, you wrote: > >>Greylisting is not working as well as it used to... Verizon, Hotmail >and >>Yahoo Mail seem to not re-send correctly when Graylisting is ON. I >previously >>posted about this.... > >AFAIK it is only Yahoo Groups that does no resend and requires xnet >or white list. In any event, if they do not resend on a 4xx they are >likely to lose mails whenever the recipient is busy for whatever >reason, besides glst, and besides breaking RFCs. >
Absolutly :) On our servers, the more spams we get are from yahoo accounts using yahoo server !! This confirm that Yahoo server retry well, because the spams are catched with our last filter spamassissin, not with glst. >And yes, glst seems to be the ultimate solution against mail viri: I >have hardly seen any virus hitting my server since using glst, and >the very few come with DSNs to forged senders or from legitimate >servers without an (updated) AV. Unfortunately glst seems to be >ineffective against phishers: they systematically retry and bypass >it, and need be blocked by other means. > >Ciao, Francesco > IMOO the best combination is : 1 - At connexion used a RBL 2 - Then do glst 3 - Then scan for av 4 - Then scan for spam/phishers/... On our server the filtering scores are : 1 - RBL : 60% connexion removed due to blacklisted ip 2 - GLST: 30% rejected due to no retry (some rare xnet in use) 3 - AV check : 1% rejected 4 - Spam check : 4% rejected Finaly only 4% are 'good' ! (with no 'false' nor 'lost' mail) This on a very small xmail server (P4 1Ghz, 512Mo ram), with more than 500 users ! No need to use external solutions, all directly handled by xmail, with only free sofware :) (Postini is free ? if not take a look at assp, transparent filtering proxy, very good :) I used it too with xmail but finaly preferred to use separate softwares for each steep to be able to implement some specific features without risks to break all the filtering stack) Francis - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
