Linux

5230 readers

185 users here now

A community for everything relating to the linux operating system

Also check out [email protected]

Original icon base courtesy of [email protected] and The GIMP

founded 1 year ago

MODERATORS

[email protected]

A tool on Linux to scan for inboxes on other mailservers? (slrpnk.net)

submitted 4 months ago* (last edited 4 months ago) by [email protected] to c/[email protected]

11 comments fedilink hide all child comments

I know this is basically a spam tool.

I think to know that you can query some info from a mailserver to test if an address exists.

I would like to find hidden addresses of some companies, for example I want to test if [email protected] exists.

Anyone know how to do that?

Update

I learned quite a bit

Mailserver block the requests that are used to get a list of inboxes ("accounts")
many servers will block mailservers that are not on an allowlist
many servers will block servers, if mails were sent to nonexistent addresses a couple of times
the message "recipient not known" will not appear often, as servers may "black hole" a senders mail and cut off the connection without sending the status message back

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 2 points 4 months ago (1 children)

Interesting idea! But if servers block me after sending x mails to nonexistent inboxes, this doesnt help.

[–] [email protected] 3 points 4 months ago

Well now its simply a matter of how many email servers can u get emailing on your behalf. U can buy a list of 300 google accounts for about $3 (general email:pass lists are far cheaper but lower success rate) add a proxy network and a python script and u can bot em all. Use ai and url shortener to make ur email content harder to filter. Obviously this is hypothetical and i do not condone such activities.