Unknown RR type in named - SRV exchange record

domain-name-system exchange bind srv-record

6,816

Based on the error message I can only assume that the line for the SRV record looks something like this:

 _submission._tcp          IN SRV         10 10 20587 mail.example.org.

instead of what you probably intended, which is this:

_submission._tcp          IN SRV         10 10 20587 mail.example.org.

Ie, the left-most column, the owner name, has been left blank which means that the name from the previous record shall be used again for this record. And then, as the owner name has already been settled for this record, _submission._tcp has to be a value that should be used for the next column and the next mandatory column is the type column.

Hence the error saying unknown RR type '_submission._tcp'.

6,816

Bogdan Bartos

Updated on September 18, 2022

Comments

Bogdan Bartos almost 2 years
I am trying to add an SRV record on Fedora 20 x64 on bind 9.

The record should reroute the mail for excahnge to a different port. So I add this SRV record:
```
_sumbission._tcp          IN SRV         10 10 20587 mail.mydomain.org.
```
And after I restart named, I get unknown RR type '_submission._tcp' and I am even more puzzled since I have a record in /etc/services as
```
submission      587/tcp         msa             # mail message submission
submission      587/udp         msa             # mail message submission
```
What am I doing wrong guys?
- Bogdan Bartos almost 10 years
  
  I tried this as the zone file: $ORIGIN host.mydomain.org. $TTL 1D @ IN SOA @ host.mydomain.org ( 1 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS @ A my_public_ip IN MX 10 mail _sumbission._tcp IN SRV 10 10 20587 mail.mydomain.org.
- Håkan Lindqvist almost 10 years
  
  Any leading whitespace or something like that? Including the zone file, properly formatted, in the question could help.
- Bogdan Bartos almost 10 years
  
  No. There is no leading space. I typed it in so many different ways. It does not seem to be the zone file since I tried to put this in a zone file that I am using all the time and it wll works with the exception of this _submission._tcp thing
- Bogdan Bartos almost 10 years
  
  I do not know what is the owner in this case. Give me an example please.
Bogdan Bartos almost 10 years

It is not the typo. I made the type when I posted on this forum. There is no typo in the actual zone file...
Håkan Lindqvist almost 10 years

@BogdanBartos Are you referring to the "sumbission" typo? That is not what my answer was about.
Bogdan Bartos almost 10 years

I do not know what is the owner in this case. Give me an example please. – Bogdan Bartos 7 secs ago edit
Bogdan Bartos almost 10 years

What a mess! I had a tab in front of _submission. I thought it does not matter if you have whitespaces or tabs in front of a record... Anyway, the zone loaded properly now. Thank you soooo much!
Håkan Lindqvist almost 10 years

@BogdanBartos Hence why I was asking if there was any leading whitespace (which there apparently was!) and posted an answer explaining the importance of having the owner name to the very left. If you found any answer particularly helpful please consider using the voting and/or accept answer functionality.