Re: Spam Decrease?
Not really. We are still getting around 140,000+ messages a day that are spam :-( Matthew Yette wrote: Has anyone who runs a mail gateway service noticed a sharp drop in emails since yesterday? I'm seeing about a 75% drop in total mail volume, and the % of spam is much less...perhaps some ISPs cracked down recently? Matt
Re: NFS and SA/Bayes DB
Brutal and bloody solution is certainly something I don't want to do :-) Thanks to all who responsed on this. Having read through them and thought about this a little more I am going to use an SQL database. We currently take in around 0.5 million messages a day. I have a feeling that sharing a file based db is just asking for trouble! Thanks, Dean Gary W. Smith wrote: -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 20, 2005 9:39 AM To: Dean Baldwin Cc: users@spamassassin.apache.org Subject: Re: NFS and SA/Bayes DB -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dean Baldwin writes: Hi, I currently have a cluster of inbound MXs running Amavis/SA etc. At the moment they are running as single entities in the sense that they do not share their databases. Has anybody tried this or any other method of shared db for multiple MXs? Yes, we did. It was brutal and bloody but it worked. Basically we had a master that we rsync'ed across the network to all of the endpoints on a scheduled basis (4 times a day). Then we had a job on each machine to swap those bayes DB's and restart SA. Did I mention it was bloody? It sounds like an SQL db is the best option. NFS sharing is certainly not recommended. With any luck one of the other large scale users using shared SQL dbs might pipe up with comments here ;) We have 4 MX servers for incoming mail that call back to two SA servers. These SA servers use MySQL as the backend for both bayes and AWL. Seems to work just fine and actually seems to be a little faster for us as well. We don't use Amavis but instead use a commercial AV scanner that runs on it's own servers as well. Our backend MySQL is running Linux-HA with DRBD on a pair of Dell 4700's with 1gb ram. The SA servers are running on two Dell 4700's (with HT enabled) with 2gb ram. The front end MX servers are running on a mixed set of dell workstations. We have been playing with this environment for some time swapping hardware in and out but for the most part the environment has a very low load balance. Typical email is about 170k emails per day. HTH... Gary Smith
NFS and SA/Bayes DB
Hi, I currently have a cluster of inbound MXs running Amavis/SA etc. At the moment they are running as single entities in the sense that they do not share their databases. This clearly has started to cause a couple of problems in that they will all see different volumes of different messages. As such they will be learning different things as different speeds. I have been looking at different ways of implementing some kind of central database. One of which is to use Mailguard and drop everything into a MySQL db. At the moment the quickest and easiest way of doing this for us is to use an NFS file system they can each see and configure SA/Amavis to use this mount for their dbs. Has anybody tried this or any other method of shared db for multiple MXs? Any thoughts, ideas or comments would be greatly appreciated. Many thanks, Dean
Re: Adding "information" messages to SPAM
Loren, Loren Wilton wrote: Is there anyway of placing a message - say at the top of the mail - stating that if this message has been incorrectly flagged as SPAM then please let us know. Is there any way of doing this with Spamassassin? I only want to flag those reported as SPAM though. In a typical spam, SA adds text much like the following at the top of the message. You can customize this text as you please: Spam detection software, running on the system "myhost.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see [EMAIL PROTECTED] for details. Now this is what I thought, however SA is not adding anything to the body of the message - it is simply changing the subject line. I guess there is another setting that I need to change elsewhere so I will go back to the manual and have a look. Thanks, Dean
Adding "information" messages to SPAM
Hi, I am currently running Spamassassin with Postfix and Clamav. Everything is working well but I would like to see whether the following is possible and how to go about it. At the moment we send all SPAM messages onto the recipient with the subject line flagged as SPAM and this works well. However, we have had a couple of false positives that I would like to be made aware of. Is there anyway of placing a message - say at the top of the mail - stating that if this message has been incorrectly flagged as SPAM then please let us know. Is there any way of doing this with Spamassassin? I only want to flag those reported as SPAM though. Many thanks, Dean