Le 14/05/2024 à 15:08, DEMBLANS Mathieu a écrit :
Hello,
I have a question about configuration simplification for SRV
configuration (maybe it can be applyed for other entries).
We manage multiple subdomain of a main one (server1.example.com,
server2.example.com,…).
For A and MX entries, we use a general domain definitions with
wildcard but is there a way to do so for SRV without having to define
all subdomains (we have several dizains of it) ?
We have to define some SRV entries with the same target like :
_/imap./_tcp.server1.example.com IN SRV main.exemple.com
_/imap./_tcp.server2.example.com IN SRV main.exemple.com
[…]
For example something like _/imap./_tcp.*.example.com IN SRV
main.example.com.
I read in a doc that the « * » can only be the leftmost label in the
name.
Is there an other way to simplify or does I have to add each entry
individually?
I hope my question is clear enough, it’s not easy to explain.
Thanks
Mat
Avoid any use of wildcard.
In the present case you should not need it.
And if really needed, do provisioning. Wildcards are a true pandora's
box. It is the "XSS" of the DNS.
Those who pretend to master all possible present and future practical
side effects of a wildcard entry simply denote a lack of humility.
Emmanuel.
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