Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Tim Watts Newsgroups: comp.os.linux.misc Subject: Re: Spam (thread drift) Date: Mon, 08 Sep 2014 19:10:10 +0100 Lines: 51 Message-ID: <2181eb-fkc.ln1@squidward.local.dionic.net> References: <3071eb-fub.ln1@squidward.local.dionic.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: individual.net URXUAtVGWa65WVNSvX+bFwPi7kjzHxFVbqvqvgJE0O49u6lzrL X-Orig-Path: squidward.local.dionic.net!not-for-mail Cancel-Lock: sha1:aWG+iIZ315FjzWDV5+YMJB2b/fU= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 In-Reply-To: Xref: csiph.com comp.os.linux.misc:12039 On 08/09/14 18:58, The Natural Philosopher wrote: > On 08/09/14 18:52, Tim Watts wrote: >> On 08/09/14 18:29, The Natural Philosopher wrote: >> >>> Stiull trying to get it to reject >>> >>> Mail from: <> >>> >>> as the spammers have started using that. >>> >>> I might actually go back to sendmail and write my own sendmail.cf again. >>> >>> Or write my own sodding MTA. >>> >>> >> >> >> Have you posed that question to the mailing list? > > Nope, because on investigation the problem is that Mail from: <> is a > perfectly valid thing to send meaning 'dont tell me if it bounces' > > i.e. if a mailer daemon bounces a message, it doesn't want to get a > bounce of the bounce... > > So I am stuck with it I think. Could you get whatever spam thingy you if any use to "+1" such mails? ie it's a bad point but not enough by itself to junk the mail... > > I am basically trying to bounce as much spam upstream as possible so > that the marketing companies will take my name off their lists. > > I do wish I knew why I get tons of mail for addresses that cant possibly > be expected to exist though. 550-550-fxg34dr@mydomain.co.uk seems a > fairly crass thing to expect to get through I implemented a throwaway scheme: me_somecrap@mydomain is actually mail for me@mydomain "somecrap" is replaced by the company name, eg me_bbc@mydomain (I did use "+" as is more conventional and works with Gmail, but you would not believe how many idiot web developers think they know how to parse an email address, but don't!) It is also interesting to see which companies lose/sell my email data. Easy to blacklist too - 1 line in a filter file.