4 ms·
And if you don't follow the RFC, the internet police will come after you! Yes, I am aware of the RFC2119 meaning of "MUST NOT." In reality, nothing prevents th
by btgeekboy 11y ago
And if you don't follow the RFC, the internet police will come after you!
Yes, I am aware of the RFC2119 meaning of "MUST NOT." In reality, nothing prevents the servers from disallowing that downgrade, except that they may not be interoperable with other servers on the internet. If the operator of the server wishes to make that tradeoff, then requiring STARTTLS is an option.
- zrm 11y agoIf you don't follow the RFC then people will email you from gmail saying "I tried to send you mail from my company's mail server and it didn't work", other people will submit a github issue to your project saying they couldn't email you, and when you try to subscribe to one of djb's mailing lists you'll get a response from your mail server saying it couldn't deliver the message. That is what actually happened when I tried it.
- spc476 11y agoAnd I subscribed to a mailing list years ago that suddenly went TLS-mandatory (for incoming email---it doesn't demand TLS when sending email) and now I can't even unsubscribe from the list.