Stevens, John wrote:
Hi All, Apologies for the crappy disclaimer :( We have two linux mail gateways protecting our MSExchange Server. We run SA with sendmail using spamass-milter, and LOVE SA. You wouldn't believe how much spam we are marking, with no false positives and very few sneaking through. One problem we had for a while (we let all spam trhough, only tag it. The MD doesn't like ANY chance of a false positive) is that a lot of spam comes through to ex employees and unlisted users. This comes through the gateways as the recipient domain is correct and the gateways had no idea of if the users existed or not. We definitely DO NOT WANT valid users on the gateways. So we had several options, most involving us not only configuring users/aliases on exchange, but also on both boxes. Then the Exchange server couldn't find these unknown recipients and bounced the message back to the sending server, which sat in the gateway's mail queue for a couple of days until they expired. Why? Well have you ever tried to send a message back to a spam server? They are good at dishing out, but not at taking. We got around the whole problem with a small perl based milter that uses an ldap query to the Exchange Server to check each recipient. If ldap can't find an appropriate alias for the recipient name, it rejects the mail. In the past two days it has rejected over 3000 spams, and reduced the stacked up mail in the gateway queue to almost nill. If anyone would find such a beast useful on their system, please let me know and I will send details to you. If there is enough interest I will package it up and put it on our website, with a web based configuration utility that sets preferences for all a user's aliases. For those not interested, please forgive the intrusion.
============================================
TUSC Computer Systems - www.tusc.com.au
John Stevens - Senior Project Engineer
Mobile: 0419840411
Direct: 03 9840 4428
---
This message (and any associated files) is intended only for the use of the individual or entity to which it is addressed and may contain information that is confidential, subject to copyright or
constitutes a trade secret. If you are not the intended recipient you are hereby notified that any dissemination, copying or distribution of this message, or files associated with this message, is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. Messages sent to and from us may be monitored.
Internet communications cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Therefore, we do not accept responsibility for any errors or omissions that are present in this message, or any attachment, that have arisen as a result of e-mail transmission. If verification is required, please request a hard-copy version. Any views or opinions presented are solely those of the author and do not necessarily represent those of the company.
-------------------------------------------------------
This SF.net email is sponsored by: eBay
Get office equipment for less on eBay!
http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5
_______________________________________________
Spamassassin-talk mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
------------------------------------------------------- This SF.net email is sponsored by: eBay Get office equipment for less on eBay! http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
