On Wed, Jan 17, 2024 at 20:13:13 +, L. Mark Stone via mailop wrote:
> Nonetheless, to be conservative, we've taken to blocking just
> @onmicrosoft.com emails for the moment (no subdomains).
It's strange you'd see anything from @onmicrosoft.com at all, as the
domain itself has no MX nor A or
On Wed, Dec 20, 2023 at 14:49:20 +, Gellner, Oliver via mailop wrote:
> Postfix is potentially vulnerable as for compatibility with broken
> clients it accepts . as an end-of-data command. Well, at least
> it did, Wietse has introduced a flag which fixes this kind of message
> smuggling:
>
>
On Fri, Nov 17, 2023 at 23:33:13 +0100, Jaroslaw Rafa via mailop wrote:
> Dnia 17.11.2023 o godz. 14:34:19 Lukas Tribus via mailop pisze:
> >
> > Google probably wants you to enable STARTTLS, so reducing sending
> > limits for non STARTTLS senders can make sense from Google's POV.
>
> That
On Mon, Sep 11, 2023 at 18:26:18 -0400, Bill Cole via mailop wrote:
> That's an indication that the client does not like your certificate.
>
> As for why, see
> https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/
>
> TL;DR: you need to fix the chain of trust for your
