[malgorithms]

Related: Daimler has a PGP policy. Whoever works on their email likes to get things done.

Last year I emailed a car dealer who worked for Mercedes Benz USA, and I got an auto-reply from Daimler that my signature was unacceptable because the expiration date on my key was too far in the future, and they wouldn't deliver my message at all, unless I fixed it.

I know the salesperson had no idea what was going on with this - but as soon as a contacted him with a signed message and a shorter-term subkey I generated just for them, his outgoing messages started being signed too.

Then, a month ago, I got a notice from Daimler that my key was expiring and I needed to get a new one on file with them.

I've been signing emails as a policy for awhile, and it's the only experience of this sort I've had.