Cannot resolve local domain name on Fedora 23

edit

Hi,

I'm having troubles accessing local corporate network resources under Fedora 23.

Let's say my corporate domain is my.local.

I can easily ping local resources by name omitting the domain part:

$ ping mail
PING mail.my.local (10.54.20.43) 56(84) bytes of data.
64 bytes from mail.my.local (10.54.20.43): icmp_seq=1 ttl=124 time=53.7 ms
...

But when I try to address the very same server by its full name, mail.my.local ping says it cannot be resolved

$ ping mail.my.local
ping: unknown host mail.my.local

Though nslookup retrieves IP addresses correctly

$ nslookup mail.my.local
Server:     10.77.10.55
Address:    10.77.10.55#53

Name:   mail.my.local
Address: 10.54.224.209
Name:   mail.my.local
Address: 10.54.20.43

My /etc/resolv.conf file generated by network manager looks sane

# Generated by NetworkManager
search my.local
nameserver 10.77.10.55
nameserver 10.77.10.54
nameserver 10.54.18.111

I've lost the whole day trying to figure out what's going wrong and failed to find anything relevant.

Any leads on either debugging or the source of the problem itself are much appreciated.