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SMTP Smuggling
[An updated version of this text may be found at https://www.postfix.org/smtp-smuggling.html]

Author: Wietse Venema

Last update: December 21, 2023

Summary
Days before a 10+ day holiday break and associated production change freeze, SEC Consult has published an email spoofing attack that involves a composition of email services with specific differences in the way they handle line endings other than <CR><LF>.

Unfortunately, criticial information provided by the researcher was not passed on to Postfix maintainers before publication of the attack, otherwise we would certainly have convinced SEC Consult to change their time schedule until after people had a chance to update their Postfix systems.

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Manticore Search is an easy to use open source fast database for search. Good alternative for Elasticsearch. What distinguishes it from other solutions is:

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Re-Inventing the API Client
Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

Bruno stores your collections directly in a folder on your filesystem. We use a plain text markup language, Bru, to save information about API requests.

You can use git or any version control of your choice to collaborate over your API collections.

Bruno is offline-only. There are no plans to add cloud-sync to Bruno, ever. We value your data privacy and believe it should stay on your device. Read our long-term vision here.