Viktor Dukhovni:
> >
> On 20 Apr 2022, at 4:20 pm, Michael Grimm <trash...@ellael.org> wrote:
> >
> > Apr 20 06:36:27 <mail.info> mail.lan postfix/postscreen[74803]: PREGREET
> > 429 after 0 from [1.2.3.4]:49074:
> > \026\003\003\001\250\001\000\001\244\003\003\327j\316\343\332\272\233\200\236\017\243`\342e\217\204\
>
> That looks like a TLS client HELLO. Perhaps the client is misconfigured and
> using
> wrapper mode on port 25 instead of 465...
It should not matter. postscreen is designed to handle random garbage.
If you could test withg Postfix 3.6 then that would help to narrow
things down a bit.
Wietse
