Re: IPv6 recap
Alessandro Vesely <[email protected]>
| Newsgroups | gmane.mail.imap.courier.general |
|---|---|
| Message-ID | <[email protected]> |
Hi, this happened again, but this time caused a bounce: <<< 554 resimta-c2p-559421.sys.comcast.net resimta-c2p-559421.sys.comcast.net 2a02:29e1:500:6c00::4 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: https://postmaster.comcast.net/smtp-error-codes.php#554 Is it possible to inhibit use of IPv6 a little bit harder? There's no way I can get a reverse address for 2a02:29e1:500:6c00::/56, as my provider itself didn't get a delegation for its 2a02:29e1::/32. It goes to 2a:: in RIPE: ; <<>> DiG 9.18.24-1-Debian <<>> 1.e.9.2.2.0.a.2.ip6.arpa ns ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19800 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ; COOKIE: cad8ae482b0e559c01000000660fe49763aa815e05fda159 (good) ;; QUESTION SECTION: ;1.e.9.2.2.0.a.2.ip6.arpa. IN NS ;; AUTHORITY SECTION: 0.a.2.ip6.arpa. 3600 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1712314758 3600 600 864000 3600 Best Ale On Mon 01/Apr/2024 12:18:52 +0200 Alessandro Vesely wrote: > On Sun 24/Mar/2024 13:00:34 +0100 Alessandro Vesely wrote: >> >> I ended up setting two new IPv6 addresses. One for outgoing mail, in ip6out >> and SPF record. The other for incoming, set in esmtpd's PORT variable and >> published as a secondary MX which only has an AAAA address. >> >> Thus far neither happened to be used. > > > Update: one was used yesterday, for outgoing mail: > > Mar 31 04:47:04 22 north courieresmtp: > id=00000000005DC23B.000000006608CEA7.000063AD,from=<[email protected]>,addr=<[email protected]>: 250 2.0.0 OK 1711853224 g24-20020a1709063b1800b00a47484f15e9si3262997ejf.241 - gsmtp > Mar 31 04:47:04 22 north courieresmtp: > id=00000000005DC23B.000000006608CEA7.000063AD,from=<[email protected]>,addr=<[email protected]>,success: delivered: alt1.aspmx.l.google.com [2a00:1450:4025:c03::1b] > Mar 31 04:47:04 22 north courieresmtp: > id=00000000005DC23B.000000006608CEA7.000063AD,from=<[email protected]>,addr=<[email protected]>,status: success > > Probably due to a delayed response to the A query. > > > Best > Ale _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users