[pfx] RFC 9719 PEM-files

2025-09-21 Thread A.Schulze via Postfix-users
Hello, German regulations (TR-02102-2 [1]) say, using 2048 bit Diffie-Hellman parameters is "deprecated". Not using DHE cipher suited is one option but that limit TLS communication with some sites that will fallback to plaintext then. So, I have to use 3072 bit or 4096 DH parameter. As 3072 se

[pfx] Re: "Must issue a STARTTLS command first" is fixed text

2025-09-13 Thread A.Schulze via Postfix-users
Am 10.09.25 um 18:58 schrieb Wietse Venema via Postfix-users: The attached backport is just code, not documentation. Thanks, Wietse! I confirm, a slightly updated version (attached) works at a first test with postfix-3.10.4 master.cf 12345 inet n - - - - smtpd -o smtpd_tls_security_l

[pfx] Re: "Must issue a STARTTLS command first" is fixed text

2025-09-10 Thread A.Schulze via Postfix-users
Hello Viktor, Am 10.09.25 um 17:43 schrieb Viktor Dukhovni via Postfix-users: That, despite apparently some clients caught off guard. This choice feels too aggressive to me. But, if you're willing to go out on a limb, perhaps you're also willing to deploy a Postfix development snapshot, in wh

[pfx] Re: retrying 5xx despite softbounce=no ?

2025-08-18 Thread A.Schulze via Postfix-users
Am 18.08.25 um 17:41 schrieb Don Cohen via Postfix-users: postconf confirms that softbounce = no but the log shows attempts to resend messages that return code 554. I want these not to be retried. Any ideas? I only know soft_bounce ... ___ Postfi

[pfx] Re: whitelisting dmarc violators

2025-07-17 Thread A.Schulze via Postfix-users
Am 17.07.25 um 13:08 schrieb Marko Cupać via Postfix-users: There are some "valid" senders which seem to violate their own policies What is the most appropriate way to selectively accept those emails? configure OpenDMARC (!) to not reject this messages: - https://manpages.debian.org/bookw

[pfx] Re: TLSRPT: master.cf overrides are being ignored and warning logs when relaying TLS report emails generated by sys4 tlsrpt-reporter

2025-06-19 Thread A.Schulze via Postfix-users
Am 19.06.25 um 11:24 schrieb Michael Webb via Postfix-users: In my master.cf I have defined a dedicated listener (port 10032) to receive TLS reports from the tlsrpt-reporter package so they can be relayed without generating another TLS report (to avoid a report loop). I tried to use these 2