We have only had a couple of customers with problems with this and have excluded them from the rule. On the other side we have stopped many customers" virus infected computers from doing much damage and as a result our smtp server never gets black listed anymore. The amount of time we spend on email server administration (specifically the issues relating to outgoing spam) is a small fraction of what it used to be before policyd.
David > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Tom DeReggi > Sent: Sunday, June 28, 2009 5:45 PM > To: WISPA General List > Subject: Re: [WISPA] OT, pesky email stuff > > > redirecting all outbound port 25 traffic to our smtp server > > Doesn't that create a lot of extra work for you, or problems for your > clients? > For example, when they use their office server mail from home, or an > Internet born Email service such as from their Web site provider > (usually > with smtp auth), and your SMTP server not listed as an approved sending > server in their SPF records? You usually dont want to be be a SPF > approved > sender for a domain owned by a high valoume web provder. > > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > ----- Original Message ----- > From: "David" <ad...@speedyquick.net> > To: "'WISPA General List'" <wireless@wispa.org> > Sent: Sunday, June 28, 2009 7:01 PM > Subject: Re: [WISPA] OT, pesky email stuff > > > > We have been using policyd for a while in conjunction with > redirecting all > > outbound port 25 traffic to our smtp server. Works great. > > > > David > > > >> -----Original Message----- > >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On > >> Behalf Of Jon Auer > >> Sent: Friday, June 26, 2009 9:48 AM > >> To: WISPA General List > >> Subject: Re: [WISPA] OT, pesky email stuff > >> > >> We are moving to Postfix with PolicyD (http://www.policyd.org) to > >> solve this exact problem. > >> PolicyD lets you limit the total number of emails sent per user per > >> day. No reason a normal home user should be sending 1000 messages > per > >> day and this will let us limit it. There may be a plugin for Courier > >> that does the same thing. > >> > >> There is still the issue of people flagging the jokes between > friends > >> and church newsletters as spam instead of deleting... > >> > >> Some larger mail shops run all their outbound email through a spam > >> filter to stop outbound stuff. If the spam is coming from a botnet > >> there is a chance the spam signature is already in the spam filter > >> database. I know some people use SpamAssassian for this. > >> > >> On Fri, Jun 26, 2009 at 10:33 AM, Marlon K. > >> Schafer<o...@odessaoffice.com> wrote: > >> > Hi All, > >> > > >> > What are you guys doing for email these days? ?I LOVE my setup for > >> it's > >> > reliability, ease of use etc. > >> > > >> > Hacked customer accounts and virus's are killing me though. ?We > don't > >> catch > >> > things until 100,000s of messages go out and we get black listed. > >> ?This has > >> > now happened 3 or 4 times in the last couple of years. > >> > > >> > My server admins aren't coming up with a solution to this other > than > >> to > >> > limit cc's to 25 per message. ?We did that once before and my > phone > >> rang off > >> > the hook because people can't send jokes to their friends..... > >> > > >> > The other thing that makes it hard is that the log files that I > get > >> (up to > >> > 40 megs per day!) don't list the authenticated sender, only the > reply > >> > address. ?So I see tens of thousands of messages from a user > that's > >> not even > >> > mine (faked info). ?sigh > >> > > >> > We use Courier MTA. > >> > > >> > My thought is to set the server to allow a max of 1000 messages > per > >> day per > >> > user. ?And to somehow make the log file ONLY send me the number of > >> messages > >> > received per a user, and the number sent, user name and ip addy of > >> all those > >> > sending. ?Twice now I've asked about that idea and gotten no > response > >> from > >> > the server admins. > >> > > >> > Suggestions? > >> > > >> > laters, > >> > marlon > >> > > >> > > >> > > >> > ------------------------------------------------------------------ > --- > >> ----------- > >> > WISPA Wants You! 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