Be Careful with Blacklist Sites for Spam protection
Category None
I wanted to blog about this when it happened, but quite frankly it's more an admin topic then development so I quickly got distracted with something and forgot all about it. Whoops!
A couple of weeks ago we had a problem with receiving e-mail from the Internet. Very quickly the problem became we couldn't receive ANY e-mail from the outside. Of course we didn't think it's a Notes problem at first and had the networking guys come in and check the firewall and all that. I mean really, Notes just works right? They better get back in to fix whatever it was that they broke. ;)
By now I forget some (most) of the details, but it came down to the fact that we were using some remote blacklists as part of our SPAM defense. And ONE of those lists went bad or dead or had some kind of problem. But we eventually removed all the blacklists and mail came back immediately. Then we put them back one at a time and found the offender.
I thought it was odd that this could happen and might be worth a mention if anyone else ever had a weird e-mailing problem.
I wanted to blog about this when it happened, but quite frankly it's more an admin topic then development so I quickly got distracted with something and forgot all about it. Whoops!
A couple of weeks ago we had a problem with receiving e-mail from the Internet. Very quickly the problem became we couldn't receive ANY e-mail from the outside. Of course we didn't think it's a Notes problem at first and had the networking guys come in and check the firewall and all that. I mean really, Notes just works right? They better get back in to fix whatever it was that they broke. ;)
By now I forget some (most) of the details, but it came down to the fact that we were using some remote blacklists as part of our SPAM defense. And ONE of those lists went bad or dead or had some kind of problem. But we eventually removed all the blacklists and mail came back immediately. Then we put them back one at a time and found the offender.
I thought it was odd that this could happen and might be worth a mention if anyone else ever had a weird e-mailing problem.
- 
Comments
Posted by rajiv thomas At 08:32:44 AM On 12/10/2008 | - Website - |
blackholes.us
I think we were listing countries like:
xx.countries.blackholes.us
Posted by David Leedy At 01:02:27 PM On 12/10/2008 | - Website - |