Check deliverability of a specific mail address of all domains from the public .ch zone file
This is a research example on how to use the new public .ch zonefile. This should not be used to get addresses for spam or phishing!
This script is just a POC: code could be improved...feel free to contribute/fork
https://twitter.com/the_pesc/status/1346434296639344649
- Setup https://github.com/amaurymartiny/check-if-email-exists as an http-Server
- Install python requirements
- Make sure your IP isn't blacklisted (check online) and port 25 isn't blocked (mostly for private ISP) -> use proxy
- Change
from_email,hello_name(and if needed set proxy) and the address to search for'info@' + domain. Make sure SPF isn't strict on the address used or add the IP to your test domain. - Get the public .ch zone file: https://www.switch.ch/de/open-data/#tab-c5442a19-67cf-11e8-9cf6-5254009dc73c-3
- Create a uniq domain list of it:
grep $'IN\tNS' ch.txt | awk '{print $1}' | uniq > ch_domain_uniq.txt - Start script and enjoy:
python3 search.py ch_domain_uniq.txt(takes a while, tip: split domain file)
| Date | Number of valid info@ addresses |
|---|---|
| 06.01.2021 | 488'727 |
- @amaurymartiny (check-if-email-exists)
- @pesc