> On 8/21/2014 4:03 PM, Ronald F. Guilmette wrote: > > Is there anything which is either a part of, or that works > > with Postfix that is capable of automagically maintaining > > a personal whitelist of specific e-mail addresses, to which > > a given user has previously sent outbound e-mail? > > > > To be clear, although I have the local Postfix configured to > > use many different public blacklists, and also some local > > domain-based blacklists (in which I have blacklisted all of > > yahoo.com, for example) what I am looking for is something > > that would effectively override all those filters for > > specific e-mail addresses that I have previously sent > > outbound mail to, e.g. <myrfriend...@yahoo.com>.
I wouldn't recommend this, because many spam zombies access the sender/victim's MUA settings, and they spew to addresses in the address book, AS the sender/victim. But I'm sure you know this. On Thu, Aug 21, 2014 at 04:30:38PM -0500, Noel Jones wrote: > amavisd-new has a "penpals" feature that integrates nicely with > postfix as a pre-queue smtpd_proxy_filter, or a post-queue > content_filter. I don't use this particular feature, but > amavisd-new is solid software. > http://www.ijs.si/software/amavisd/ > > As an alternative, I don't suppose it would be much trouble to > convince fail2ban to add outbound email addresses to a database > to use as a postfix check_sender_access map. But I don't know > of any existing fail2ban filters for that. This would still be > subject to spoofing. To me, this sounds more like a policy service feature (or that it should be, I mean.) Check the SASL username and sender address, to whitelist the recipient's reply. I don't know if any of the existing projects (such as cbpolicyd or postfwd) can do this easily, but it shouldn't be hard to add. -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
