This thread is long dead, but I'm surprised no one suggested mimedefang. -- We're just a Bunch Of Regular Guys, a collective group that's trying to understand and assimilate technology. We feel that resistance to new ideas and technology is unwise and ultimately futile.
On 12/6/06, Kelly Jones <[EMAIL PROTECTED]> wrote: > I have an SMTP server that mostly just accepts mail (sends very little > email out), and I want to write Perl/PHP scripts (not C code!) to > control every step of a remote connection. At each step, I want the > option to tempfail/permfail the email or even drop the connection > entirely. Examples: > > Even before the sender says "HELO", I want the ability to return stuff like: > > 550 You're on an RBL. Go away. > 450 Your IP address is already sending me mail. Try again later. > [drop the connection silently w/ no message; prevents DOS attacks] > [do nothing at all; let the sender go to the next step] > > After the sender says HELO, I might do: > > 550 Your HELO is *my* server? I don't think so! > 450 HELO doesn't match domain, but if you connect twice more, I'll let you > in > 250 Hello, [ip address], how's it going? > > [in the 2nd case, I'd keep track of the senders HELO/IP combination > somewhere, so I could ok them if they connected twice more] > > Same sort of thing after I get "MAIL FROM" (maybe I don't like certain > senders) and each "RCPT TO" (I may graylist certain recipient-sender > combinations). > > Finally, I want the ability to call an arbitrary Perl/PHP script after > the DATA is sent (maybe run it through spamassassin) > > Basically, I'm looking for an SMTP server w/ lots of "hooks"-- > something that works well out of the box, but something I can also > tweak easily if I want. > > I don't like the options I have so far: > > 1. Use sendmail and milter (requires coding in C, ugly macros, and > hard to understand) > > 2. Write my own SMTP server (don't want to re-invent the wheel, even > though the RFC doesn't seem THAT bad) > > What's the best SMTP server for my purposes? > > And, yes, I realize some of my examples above are lousy-- I'm looking > for a solid foundation SMTP server to experiment with, not planning to > use on a production system.
