Option to disable client-initiated renegotiation

2023-03-13 Thread Serg
Hello, is there any way to disallow client-initiated renegotiation at the dovecot? I haven't found any mention of this feature within source code as well as at the documentation. I am asking about it because without this feature mail server is vulnerable to a TLS renegotiation DoS attack which

[feature request] SSL handshake rejection for non-SNI clients

2023-05-16 Thread Serg via dovecot
I would like to offer to implement a feature to reject SSL handshakes for a default certificate-key pair for efficiently discarding bot requests (i.e. such requests that provide invalid/not configured hostname or do not specify at all, like when doing request to the IP address directly). Ngin

Re: better delivery mechanism to maildir?

2024-02-29 Thread Serg via dovecot
On 2/29/24 15:54, Andreas via dovecot wrote: Thanks! Can you say where the mapping from the user part in "From" addresses to actual mail(sub)dir goes after switching to LMTP? Currently, I've got a `virtual_mailbox_maps` in Postfix main.cf for this purpose. Is there something similar in Dovecot