I have a problem with mail from a certain domain being rejected with reason extra="RDNS missing".
Manually looking for aa.bb.cc.dd.in-addr.arpa, I went through the following sequence of result (which is not 100% the same way as a resolver should go, e.g. I don't start with root servers from scratch for later queries):
# host -a aa.bb.cc.dd.in-addr.arpa
times out
# host -a dd.in-addr.arpa
gives NS entries, e.g. x.arin.net
# host -a aa.bb.cc.dd.in-addr.arpa x.arin.net
gives (among others)
cc.dd.in-addr.arpa NS foo.subfoo.AAAAA.com
# host -a foo.subfoo.AAAA.com
SERVFAIL
# host -a AAAA.com
AAAA.com NS bar.subbar.BBBB.com
# host -a bar.subbar.BBBB.com
SERVFAIL
# host -a BBBB.com
BBBB.com NS ns.BBBB.com
ns.BBBB.com A xx,yy,zz,uu
(interestingly, there are several NS records, but glue only for a few, not always the same)
# host -a bar.subbar.BBBB.com ns.BBBB.com
subbar.BBBB.com NS foo.subfoo.AAAA.com
So it looks like a loop: In order to find foo.subfoo.AAAA.com, I need to find bar.subbar.BBBB.com and vice versa.
This works only if glue records are provided.
However, if I use Squishywishywoo: complete dns traversal checking , no problem is displayed.
In fact checking the log they produce indicate that already the gtld-servers *do* provide glue record, e.g. for bar.subbar.BBBB.com
Is there a reason why Astaro cannot find the RDNS entry as good as squish.net can?
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