SMTP is boring, but omnipotent, but it's a the main way to restore passwords.
For now, there is no dependencies, just a modern python runtime.
The script use ENV variables :
- SMTP_HOST
- SMTP_USER
- SMTP_PASSWORD
Some modern assertions :
- TLS all the time, direct TLS connection or pimp your connection with STARTTLS
- Authentication must be kept simple, juste AUTH PLAIN
- The RFC doesn't specify it, but utf8 is the de facto standard for text encoding
The script tests the 3 SMTP ports :
- 25 should not be used for mail transfer, but for server to server communication
- 465 is no more registered for SMTP at IANA, but it was
- 587 is the current official port for sending mails
The script try to open an smtps connection (no, this protocol name is not yet normalized) and fallback to smtp+starttls.
Authentication with AUTH PLAIN and UTF8 encoding.
No mail is sent.