Dear All,
Until ROS 5.7, dns cache mikrotik doesn’t support query for SRV type.
This query from nslook for SRV type:
This dns cache at mikrotik 5.7:
It doesn’t bother actually but it seems weird for me 
.
Thanks in advance.
DNS is extensible, new record types can be added at any time. So any properly written DNS cache is able to store them, even if it doesn’t know what they mean. The one in ROS seems to do it just fine.
Newer versions (looked at 5.21) now recognize the records to be SRV, but still show “0.0.0.0” for data. Not that it really matters, but it would be better to show something like “unknown data”. Also showing some more details for unknown types, e.g. “unknown (type 46)” would not hurt. Or just naming all common types, there are not so many of them. Maybe one day, when programmers get bored and have nothing better to do. 
Dear All,
I am using RB CRS125-24G-1S-2HnD with V6.27 inside, I could not find any option for srv record in mikrotik dns. So dns could not resolve and client could join into the domain in Windows Active Directory. Currently my network uses Windows Server 2003 R2 (Will upgrade to Windows Server 2012 R2 Soon) for Active Directory and Mikrotik RB for DNS everything is working fine only resolving dns does not work so we could not join client into domain at all.
Appreciate for every answer here.
Thank you so much!
Thy Ly
It depends on what you’re trying to do. You can’t add static SRV record, that’s not supported. But if you want to just resolve external SRV records, that works fine.