>We have tens of thousands of users. nothing wrong with that
> > are you running anvil? >No, I'm wondering how much that might help. it will help some, maybe a lot, esp if single IPs are connecting above the anvil rate. > > are you running RAV (ok for small volumes) or exporting imail users? > >No RAV, we are exporting imail users. then postfix should not be bogging down at all. I've seen an 800 MHz postfix with 512 MB ram reject 50 to 70 unknown users PER SECOND for days with no impact on legit mail flow. postfix is doing how many rejects of unknown users/day? what specfically is "bogged down" Len
