Date: Thu, 25 May 2006 11:10:57 -0400 From: Bill Moran <wmoran@collaborativefusion.com> To: Olga Zenkova <siro200@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: Spam problem! Message-ID: <20060525111057.7948622e.wmoran@collaborativefusion.com> In-Reply-To: <20060525145312.50581.qmail@web53406.mail.yahoo.com> References: <20060525145312.50581.qmail@web53406.mail.yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Olga Zenkova <siro200@yahoo.com> wrote: > I use sendmail 8.13.3 and gather full log of its work. > I see such strings in it: > > <<< RCPT TO: user1@domain.com > >>> 250 2.1.5 <user1&domain.com>... Recipient ok > <<< RCPT TO: user2@domain.com > >>> 250 2.1.5 <user2&domain.com>... Recipient ok > <<< DATA > <<< To: user3@domain.com > > where user1, user2 - users names > domain.com - domain name > > After that user1 and user2 get spam letters to their > mailboxes with field "To: user3" in it. There are no > user1 or user2 in this field. Is it possible to cut > off these letters? Especially it is difficult to > explain for user1 and user2 why they got letters > addressed not for them. Spam prevention is a _huge_ topic. Mainly because everything and anything you do to try to prevent spam, spammers will work to circumvent. I would suggest lots and lots of reading on the problem. Research spamcop, spamassassin, greylisting to start, plus any links that those point you to. You've got a lot of work on your hands to understand the problem and effectively prevent it. Alternatively, you can purchase a commercial solution. There are many appliances available. Or you could hire an experienced consultant to set up spam blocking on your existing server. Good luck. -- Bill Moran Time for some thrilling heroics. Jayne Cobb
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060525111057.7948622e.wmoran>