In our IPv6 testing, we've found that postfix is unable to delivery to LMTP
when running purely in IPv6 mode. All other aspects of postfix work just
fine.
Here is an example from the log:
Jun 27 05:47:56 lb postfix/lmtp[32685]: BCD8720FE3:
to=<ad...@lb.multinode1.zimbraqa.lab>, relay=none, delay=17237,
delays=17236/0.03/0/0, dsn=4.4.3, status=deferred (Host or domain name not
found. Name service error for name=lb.multinode1.zimbraqa.lab type=AAAA:
Host not found, try again)
However, the AAAA record exists:
root@lb:~# dig -t AAAA lb.multinode1.zimbraqa.lab
; <<>> DiG 9.7.0-P1 <<>> -t AAAA lb.multinode1.zimbraqa.lab
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43977
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;lb.multinode1.zimbraqa.lab. IN AAAA
;; ANSWER SECTION:
lb.multinode1.zimbraqa.lab. 3600 IN AAAA fc00:10:112:16::155
;; Query time: 17 msec
;; SERVER: fc00:10:112:16::169#53(fc00:10:112:16::169)
;; WHEN: Wed Jun 27 05:58:40 2012
;; MSG SIZE rcvd: 72
If I switch "disable_dns_lookups" to yes, then delivery works.
What can be done on my end to debug this further? This is postfix 2.10
snapshot 2012/04/22
--Quanah
--
Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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