Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Kris @isotopp@infosec.exchange

2/17/2026, 6:03:10 PM

Public

I can do fun things with mail.

# unerwünschte Werbung
:0
* ^X-local-part-suffix: kris-macheist
{
    EXITCODE=67

    :0 i
    $BOUNCELOG/
}

What is that Six-Seven there?

/usr/include/sysexits.h:#define EX_NOUSER       67      /* addressee unknown */

It is a user-unknown bounce, and a local copy.

Kris @isotopp@infosec.exchange

2/17/2026, 6:08:31 PM

Public

"The mail you are sending your request from, kris@koehntopp.de, is not the mail that is registered for your account, kris-ourcompanyname@koehntopp.de"

"That is correct. The mail you are sending your answer from, do-not-reply@ourcompanyname.com, is also not the mail address you want me to send my shit to, support@ourcompanyname.com, so what exactly is the problem?"

If you have a fediverse account, you can quote this note from your own instance. Search https://infosec.exchange/users/isotopp/statuses/116087305760564354 on your instance and quote it. (Note that quoting is not supported in Mastodon.)