On Wed, Apr 09, 2025 at 07:57:57AM +0200, Jack Raats via Postfix-users wrote:
> My only ipv6 mailserver tries to connect with list.sys4.de which is > ipv6 only??? It is presently IPv4-only. Apr 06 18:41:03 amnesiac postfix/smtp[968777]: Verified TLS connection established to list.sys4.de[45.90.5.195]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 Apr 07 14:45:58 amnesiac postfix/smtp[1044560]: Verified TLS connection established to list.sys4.de[45.90.5.195]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 Apr 08 23:29:21 amnesiac postfix/smtp[1070022]: Verified TLS connection established to list.sys4.de[45.90.5.195]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 With no IPv6 address in DNS: $ dig +noall +noedns +ans +auth +add +comment -t aaaa list.sys4.de ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2866 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; AUTHORITY SECTION: sys4.de. 1130 IN SOA ns.sys4.de. hostmaster.sys4.de. 2025040903 3600 3600 604800 3600 -- Viktor. _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org