Re: [courier-users] Blocking outgoing messages?
On Pt, 2008-06-27 at 10:19 +0800, Jeff Jansen wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Pawel Tecza [EMAIL PROTECTED] wrote on 2008-Jun-27: Maybe my post wasn't clear enough, but I don't want to block messages which my server *receives* from [EMAIL PROTECTED] address. I need to block messages my users *send* to that address and it's not one of my addresses, of course. Create an alias for the bad address on your server and do something with it locally. Then it won't ever leave your server. Hi Jeff, Thank you very much for the tip! It really works and does what I want :) Below is an example piece of aliases file. It forwards user's reply to postmaster and does a copy of the reply in a text file. [EMAIL PROTECTED]: [EMAIL PROTECTED], phishing-reply phishing-reply: |cat /path/to/phishing-reply.txt I think it can be useful for another postmasters. Have a nice day, Pawel signature.asc Description: This is a digitally signed message part - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
Hello again :) On Pt, 2008-06-27 at 07:06 +0200, Bernd Wurst wrote: Hi. On Thursday 26 June 2008, Pawel Tecza wrote: In my opinion difference between badfrom and spamtrap options is that badfrom is for addresses in MAIL FROM: and spamtrap is for addresses in RCPT TO:, but both are for domains I host. Please correct me, if I'm wrong. I've never seen such a limitation. But seems like you're right. In a current test, this did not work as I expected. Sorry, I thought this could contain arbitrary values for recipient addresses. This seems wrong. No problem :) Maybe my post wasn't clear enough, but I don't want to block messages which my server *receives* from [EMAIL PROTECTED] address. I need to block messages my users *send* to that address and it's not one of my addresses, of course. I understood what you want, thought this should work... Okay, I'm out. A custom alias won't work either, I suppose. A courierfilter should be able to do this, perhaps one of the pytonfilters can blacklist some addresses? I'm not very familiar with pythonfilters by Gordon Messmer, but Jeff Jansen has just pointed me the solution. It seems that using aliases is a good method to blocking outgoing messages. My best regards, Pawel signature.asc Description: This is a digitally signed message part - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
Paweł Tęcza writes: Below is an example piece of aliases file. It forwards user's reply to postmaster and does a copy of the reply in a text file. [EMAIL PROTECTED]: [EMAIL PROTECTED], phishing-reply phishing-reply: |cat /path/to/phishing-reply.txt I think it can be useful for another postmasters. The whole problem with this approach is then you'll need to constantly maintain and update a list of phishing mailboxes. This is a losing war. The only solution here is a large cluestick, applied sufficiently to the lusers' heads. pgpApwISN7qkB.pgp Description: PGP signature - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
On Pt, 2008-06-27 at 07:07 -0400, Sam Varshavchik wrote: Paweł Tęcza writes: Below is an example piece of aliases file. It forwards user's reply to postmaster and does a copy of the reply in a text file. [EMAIL PROTECTED]: [EMAIL PROTECTED], phishing-reply phishing-reply: |cat /path/to/phishing-reply.txt I think it can be useful for another postmasters. The whole problem with this approach is then you'll need to constantly maintain and update a list of phishing mailboxes. Hi Sam, Fortunately we have been attacked only one time. I hope I never need to use that tip :) This is a losing war. The only solution here is a large cluestick, applied sufficiently to the lusers' heads. I believe that people aren't so stupid to send their passwords to anyone, but I would like to have any weapons to protect also dumb users. Best regards, Pawel signature.asc Description: This is a digitally signed message part - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
[courier-users] Blocking outgoing messages?
Hello, Is it a way to block outgoing messages from my authenticated users to specified e-mail address? Something like badfrom [EMAIL PROTECTED] in the bofh file, but for external addresses. Recently many of my users have received the phishing messages. I sent a warning to them, of course, but some of the users replied to the address from Reply-To: header. Fortunately nobody disclosed his password :) I know I can block IP address of MX for that domain using firewall, but I rather prefer block only one e-mail address. Have you ever been attacked by the phishing messages? What do you do in that situations to protect yourself? My best regards, Pawel signature.asc Description: This is a digitally signed message part - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
Hi. On Thursday 26 June 2008, Paweł Tęcza wrote: Is it a way to block outgoing messages from my authenticated users to specified e-mail address? Something like badfrom [EMAIL PROTECTED] in the bofh file, but for external addresses. spamtrap [EMAIL PROTECTED] regards, Bernd -- DigiGnome Real life should have a fucking search function, or something. DigiGnome I need my socks. signature.asc Description: This is a digitally signed message part. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
Bernd Wurst napisał(a): Hi. On Thursday 26 June 2008, Paweł Tęcza wrote: Is it a way to block outgoing messages from my authenticated users to specified e-mail address? Something like badfrom [EMAIL PROTECTED] in the bofh file, but for external addresses. spamtrap [EMAIL PROTECTED] Hello Bernd, Thanks a lot for your reply! Are you sure that option works for users on outer mail servers? I have not checked it yet, but I understand description of spamtrap option that it's only for users in my hosted domains. In my opinion difference between badfrom and spamtrap options is that badfrom is for addresses in MAIL FROM: and spamtrap is for addresses in RCPT TO:, but both are for domains I host. Please correct me, if I'm wrong. Maybe my post wasn't clear enough, but I don't want to block messages which my server *receives* from [EMAIL PROTECTED] address. I need to block messages my users *send* to that address and it's not one of my addresses, of course. Cheers, Pawel - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Pawel Tecza [EMAIL PROTECTED] wrote on 2008-Jun-27: Maybe my post wasn't clear enough, but I don't want to block messages which my server *receives* from [EMAIL PROTECTED] address. I need to block messages my users *send* to that address and it's not one of my addresses, of course. Create an alias for the bad address on your server and do something with it locally. Then it won't ever leave your server. HTH Jeff Jansen -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIZE5IGfIHDMaiC9cRAo96AKCMGz1wR8AcVIXRNupQS6kVX+psiQCgsDU5 gJPQWZVjsUh5fFFVoEixt78= =zOkJ -END PGP SIGNATURE- - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Blocking outgoing messages?
Hi. On Thursday 26 June 2008, Pawel Tecza wrote: In my opinion difference between badfrom and spamtrap options is that badfrom is for addresses in MAIL FROM: and spamtrap is for addresses in RCPT TO:, but both are for domains I host. Please correct me, if I'm wrong. I've never seen such a limitation. But seems like you're right. In a current test, this did not work as I expected. Sorry, I thought this could contain arbitrary values for recipient addresses. This seems wrong. Maybe my post wasn't clear enough, but I don't want to block messages which my server *receives* from [EMAIL PROTECTED] address. I need to block messages my users *send* to that address and it's not one of my addresses, of course. I understood what you want, thought this should work... Okay, I'm out. A custom alias won't work either, I suppose. A courierfilter should be able to do this, perhaps one of the pytonfilters can blacklist some addresses? regards, Bernd -- Outside the killings, Washington has one of the lowest crime rates in the country. - Mayor Marion Barry, Washington, D.C. signature.asc Description: This is a digitally signed message part. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
