Re: limiting number of recipients in email
On Wed, Feb 24, 1999 at 12:25:24AM +0800, Marlon Anthony Abao wrote: > hello, > am sure that this has been discussed here a gadzillion times, an i hope > one more time would not be so bad :) > > how does one go about limiting the number of recipients in the 'CC:" / > "BCC:" fields? i don't want any of my subscribers to spam to the outside > world. > at least this way, they would at least be discouraged to do so. You can try patching qmail-smtpd to support tarpitting. This lets you insert a delay after each recipient that the sender supplies after some set number of recipients. If you insert, say, a five-second delay for each recipient after the fiftieth, one of your users would have a hard time sending a message to 10,000 recipients. (This assumes that these messages are being injected by SMTP.) See http://www.palomine.net/qmail/tarpit.html Chris
Re: limiting number of recipients in email
may i even sugest that a good idea would be a log monitor (such as swatch) that can watch for a message ID and see how many remote addresses it is being sent to, and alert the admin if it is over $MAXwhatever rcpt's. i know i have found MANY MANY spammers from just switching VC's to see tons of remote email for one message, the cool part is finding their modem, pulling it, and waiting for them to call too. anyway, just a thought. later end \\ Greg Albrecht([EMAIL PROTECTED])\\ \\ Safari Internet (www.safari.net)\\ \\ 1-888-537-9550 ([EMAIL PROTECTED]) \\ On Wed, 24 Feb 1999, Marlon Anthony Abao wrote: > hello, > am sure that this has been discussed here a gadzillion times, an i hope > one more time would not be so bad :) > > how does one go about limiting the number of recipients in the 'CC:" / > "BCC:" fields? i don't want any of my subscribers to spam to the outside > world. > at least this way, they would at least be discouraged to do so. > > -marlon >
limiting number of recipients in email
hello, am sure that this has been discussed here a gadzillion times, an i hope one more time would not be so bad :) how does one go about limiting the number of recipients in the 'CC:" / "BCC:" fields? i don't want any of my subscribers to spam to the outside world. at least this way, they would at least be discouraged to do so. -marlon