RE: [Mimedefang] Multiple From addresses

2005-12-16 Thread fredrik.pettai
However, I grepped all mails I got hands on and found NO single valid mail with two From addresses, hence, it's a SPAM indicator; does anyone stumbled across a valid mail with multiple From's, perhaps, someone uses this feature himself? Yes, i've seen that on mails from a maillist server. I

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Steffen Kaiser
On Thu, 15 Dec 2005, David F. Skoll wrote: Jan Pieter Cornet wrote: An easier solution might be to have a process tail(1) your logfile and take action on the information there. I think I've even seen something like that: more than x invalid recipients, and you're firewalled away. That's

Re: [Mimedefang] disclamer only for out going mails.

2005-12-16 Thread bablu bablu
I am just making a genuine effort to get some help. I got the message... This is a last mail from me :) --- Rob MacGregor [EMAIL PROTECTED] wrote: On 16/12/05, bablu bablu [EMAIL PROTECTED] wrote: Pl. help me I am not much of script writer You've obviously not caught the subtle

Re: [Mimedefang] unknown os error

2005-12-16 Thread Joseph Brennan
--On Thursday, December 15, 2005 10:15 PM +0100 Jan Pieter Cornet [EMAIL PROTECTED] wrote: Dec 15 09:50:39 web sendmail[26589]: jBEE79GY027808: to=beforethebell- [EMAIL PROTECTED], delay=1+01:43:29, xdelay=00:00:00, mailer=esmtp, pri=2462405, relay=mail2.marketwatchmail.com., dsn=4.0.0,

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread David F. Skoll
Steffen Kaiser wrote: After reading these two paragraphes some worrying struck me: In opposite to SSH connections you cannot assume that the attacker sits on the other side of a SMTP communication. Maybe the server just relays the mail or is an huge mail hoster (say, hotmail, gmail, aol),

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Ben Kamen
Steffen Kaiser wrote: Actually, there was a patch for sendmail posted to comp.mail.sendmail for a feature drop connection if number of bad recipients exceeds n. http://groups.google.com/group/comp.mail.sendmail/browse_thread/thread/5203bd02a5d9f8f3 Problem is, I've seen a lot of attacks

RE: [Mimedefang] disclamer only for out going mails.

2005-12-16 Thread Gary Funck
From: bablu bablu Sent: Friday, December 16, 2005 2:32 AM I am just making a genuine effort to get some help. Apart from the fact that there are no great supporters on this list of adding disclaimers, it is also true that there is no direct implementation in the mimedefang filter as it comes

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Kenneth Porter
--On Friday, December 16, 2005 10:55 AM -0500 Kevin A. McGrail [EMAIL PROTECTED] wrote: Also, for my own personal setup since I use virtusertables as well, I have set a very hard-coded check in filter_recipient like this: Is that looking for custom recipient names that you've registered

RE: [Mimedefang] disclamer only for out going mails.

2005-12-16 Thread Joseph Brennan
Gary Funck [EMAIL PROTECTED] wrote: Personally, I think it would be good if a page/two were added to the Wiki that demonstrates a working implementation of how to add a boilerplate to outgoing mail. It might take a lengthy page to describe what outgoing mail might mean to different

RE: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Gary Funck
From: David F. Skoll Sent: Thursday, December 15, 2005 1:53 PM Unfortunately, MIMEDefang only sees exactly what was in the RCPT TO: command. It doesn't know the results of virtusertable changes. (Though it occurs to me that it can see the mailer, so if you map invalid addresses to

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread David F. Skoll
Gary Funck wrote: Can the socket map feature be put to work here? Unfortunately, a filter_map call is called outside the context of a message -- in other words, there's no way to associate a filter_map call with a milter session. The SOCKETMAP support was added so our commercial CanIt products

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Jan Pieter Cornet
On Fri, Dec 16, 2005 at 04:11:52PM -0500, David F. Skoll wrote: Can the socket map feature be put to work here? Unfortunately, a filter_map call is called outside the context of a message -- in other words, there's no way to associate a filter_map call with a milter session. Well, in

Re: [Mimedefang] dictionary attacks looking for a valid user

2005-12-16 Thread Kevin A. McGrail
I had too many issues with +'s not working with websites and some of my email addresses being handled by a mixture of Linux and Exchange that I gave up and abandoned it. Is that looking for custom recipient names that you've registered with? If so, have you tried plussed addresses? A lot of web

RE: [Mimedefang] disclamer only for out going mails.

2005-12-16 Thread Gary Funck
From: Joseph Brennan Sent: Friday, December 16, 2005 12:51 PM To: mimedefang@lists.roaringpenguin.com Anyone attempting this is going to need to think through precisely which messages need the special treatment. Gary's example focuses on mail coming from IP addresses owned by the