We're seeing email failures to outlook.uga.edu.
dig uga.edu +nssearch shows only dns3.uga.edu responds with an soa record.
and
dig -t mx outlook.uga.edu @dns3.uga.edu returns an mx record.
outlook.uga.edu. 86400 IN MX 10 707341637.mail.outlook.com.
And we see a problem with the uga.edu nameservers when attempting to get an MX
record.
3 of the 4 nameservers don't seem to be communicating with the world ... but
one, dns3, is.
There are 4 name servers defined as authorities for uga.edu.
dns1.uga.edu.
dns2.uga.edu.
dns3.uga.edu.
dns4.uga.edu.
It has been suggested that an AD server is consistently getting correct
answers ... ie, is cycling through all 4 nameservers and coming up with the mx
record ... but BIND servers are not consistently getting an answer.
Confused about this. I believe I've read that resolv.conf will only take the
1st 3 nameservers in a search list ... but doubt that's really related to this
issue.Guessing that during a recursive search that goes through the TLD
nameservers info about all 4 of the uga.edu nameservers is passed along to
whatever recursive server is performing the query. Then I would expect that
server to try all the nameservers in the list. In fact, a test I've run seems
to confirm this. Can anyone offer any other thoughts on this? Any reason this
MX record check might fail on BIND servers? Obviously the fact that 4
nameservers are delegated authority for the domain and only 1 of them can be
reached is an issue.
Thanks,
Marty
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