We have taken a pretty hard line on spam at our company and started to completely block tons of mail servers. Our CPUs are for business, not for penis enlargement emails or whatever the latest subject craze is out there. In some cases, we have blocked entire subnets because the spammers have attempted numerous times to look for open relays. It's always nice to come in first thing, check your log file and see spammers connecting to your mail server every 6 seconds over the course of the 8 hours you were sleeping at home. "Ok, that will be enough of that," as I add them to our deny connection list....
I have been disappointed with the amount of control Notes gives you for SMTP. Most of the rules you can setup are focused around the From and Subject fields. Spammers have gone way beyond using those fields. The next version of Notes/Domino really need to focus on allowing the admins to establish rules for any and all SMTP fields that come in.
I have built a very small database in Notes that gets all of our dead mail which 99% of the time are replies back to bogus email addresses telling them that one of the thousands of email combos they have tried does not exist in our domain. It rolls up all the email by the last IP address that connected to our mail server and tells us how many we had in the last 24 hours. It's not the best solution but it has allowed us to idenify a whole ton of mail servers out there that are being used for spam.
As far as phone spammers, I find that keeping an air horn next to your phone for those types of calls works very well. Deaf telemarkers don't stay in business that long. :)
We have taken a pretty hard line on spam at our company and started to completely block tons of mail servers. Our CPUs are for business, not for penis enlargement emails or whatever the latest subject craze is out there. In some cases, we have blocked entire subnets because the spammers have attempted numerous times to look for open relays. It's always nice to come in first thing, check your log file and see spammers connecting to your mail server every 6 seconds over the course of the 8 hours you were sleeping at home. "Ok, that will be enough of that," as I add them to our deny connection list....
I have been disappointed with the amount of control Notes gives you for SMTP. Most of the rules you can setup are focused around the From and Subject fields. Spammers have gone way beyond using those fields. The next version of Notes/Domino really need to focus on allowing the admins to establish rules for any and all SMTP fields that come in.
I have built a very small database in Notes that gets all of our dead mail which 99% of the time are replies back to bogus email addresses telling them that one of the thousands of email combos they have tried does not exist in our domain. It rolls up all the email by the last IP address that connected to our mail server and tells us how many we had in the last 24 hours. It's not the best solution but it has allowed us to idenify a whole ton of mail servers out there that are being used for spam.
As far as phone spammers, I find that keeping an air horn next to your phone for those types of calls works very well. Deaf telemarkers don't stay in business that long. :)