Any risk to get trapped in a RBL?

[MarceloPedra]

Hello! I liked your script but I'm worried about the possibility of being trapped by an RBL if lots of invalid email addresses are checked. Can you confirm or have any experience with that?
Do you recommend running this from a localhost or from a production server?

[mamchenkov]

@MarceloPedra it's been a while since I updated my RBL knowledge, so can't say for sure.

With the existing functionality, you can:

• "slow down" the rate of checks by using fewer children
• break-up large files into smaller chunks and execute checks with some intervals between them
• sort your email files randomly by domain, to make sure checks are spread across multiple mail servers/domains

The script was written for user migration tasks that we worked on at the time, so we didn't have to run it on production. If I remember correctly, we just ran it on a temporary/non-critical server somewhere on the side.