Rick Macdougall wrote:
As to Maciej question, yes quite a few people use the greylist patch. We do with about 200 domains, and my personal spam has dropped from 200 a day to 4 or 5 a week.
There are problems with
1 - Old NT exchange servers (some banks still use them), you need to white list them, no fix except to get them to upgrade (good luck).
2 - Mail Max, apparently a mail server for Windows, not sure if there is a fix yet, we've whitelisted where we need too.
3 - Old Novell groupwise servers, again we white list where needed.
All of them bounce emails when giving a 421 soft error instead of retrying. The majority of our clients and myself can live with that, we've only had one exception in 200 domains, and we just allow all email through for that domain.
This is really useful info, thanks for sharing it. I should probably make a more comprehensive page for the greylisting stuff, it seems to generate a lot of questions. Or better yet, perhaps I should figure out how to setup the wiki I installed like 2 weeks ago.
I'm in the process of re-writing the greylist patch to allow per user whitelisting (local users)
I'd be interested to see if that increases the per connection overhead on a busy system.
as well as adding that option to my php SA user interface. After that it will be up to the user if they want to use greylisting or not.
Is this user interface publicly available?
Regards,
Bill
