[mailop] DKIM with 3072-bit or 4096-bit RSA signatures

Hello everyone, what's the experience with DKIM signatures with RSA keylengths larger than 2048 bits? Is it supported by verifiers? Any known incompatibilities? RFC 6376 requires verifiers to validate 512 to 2048-bit RSA signatures. RFC 8301 changes this requirement to 1024 to 4096 bits. I'm

[mailop] ab...@microsoft.com => Mailbox full

For heaven's sake Microsoft! I'm trying to report the same spaming Office 365 Customer again which uses a shared ip address with some other Swiss companies that use Office 365 and experience collateral damage... That is NOT the reply I expect. === snipp === Delivery has failed to these recipien

Re: [mailop] ab...@microsoft.com => Mailbox full

Benoit Panizzon via mailop wrote: Delivery has failed to these recipients or groups: ab...@microsoft.com The recipient's mailbox is full and can't accept messages now. Please try resending your message later, or contact the recipient directly. This is normal at M

Re: [mailop] DKIM with 3072-bit or 4096-bit RSA signatures

It appears that Matthäus Wander via mailop said: >Hello everyone, > >what's the experience with DKIM signatures with RSA keylengths larger >than 2048 bits? Is it supported by verifiers? Any known incompatibilities? All the verifiers I know pass the signatures to openssl or gnutls for verificati

Re: [mailop] ab...@microsoft.com => Mailbox full

On Thu, 20 Apr 2023 15:32:18 +0200, Benoit Panizzon via mailop wrote: ... >Delivery has failed to these recipients or groups: > >ab...@microsoft.com >The recipient's mailbox is full and can't accept messages now. Please try >resending your message later, or contact t

Re: [mailop] DKIM with 3072-bit or 4096-bit RSA signatures

Dňa 20. apríla 2023 16:43:45 UTC používateľ John Levine via mailop napísal: >As far as I know nobody has implemented the elliptic signatures in RFC 8463 >other >than for testing. Same reason. Are you sure that nobody? I do dual sign for about 2 years already. I start to log DKIM signature ty

Re: [mailop] ab...@microsoft.com => Mailbox full

The age old problem: Hire a bunch of people to read it that aren't skilled enough to do anything about it, or hire people who are skilled to handle it but don't have the time or manpower to read it all. I'm surprised they even have an abuse inbox. I just block spammy senders from MS/O365 domai

Re: [mailop] ab...@microsoft.com => Mailbox full

Am 20.04.23 um 21:25 schrieb Jarland Donnell via mailop: The age old problem: Hire a bunch of people to read it that aren't skilled enough to do anything about it, or hire people who are skilled to handle it but don't have the time or manpower to read it all. There's a third option: Handle mos