The flags, services and regexp are each limited to 255 characters. https://tools.ietf.org/html/rfc2915
8. DNS Packet Format The packet format for the NAPTR record is: 1 1 1 1 1 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | ORDER | +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | PREFERENCE | +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ / FLAGS / +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ / SERVICES / +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ / REGEXP / +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ / REPLACEMENT / / / +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ Mealling & Daniel Standards Track [Page 13] RFC 2915 NAPTR DNS RR September 2000 where: FLAGS A <character-string> which contains various flags. SERVICES A <character-string> which contains protocol and service identifiers. REGEXP A <character-string> which contains a regular expression. REPLACEMENT A <domain-name> which specifies the new value in the case where the regular expression is a simple replacement operation. <character-string> and <domain-name> as used here are defined in RFC1035 [1]. > On 31 Mar 2021, at 21:53, Harshith Mulky <harshith.mu...@outlook.com> wrote: > > Hello Experts, > > Need a help, > How do I know what is the maximum limit in a NAPTR RR which I am trying to > configure? > > If I configure as below > > 5.4.7.7.7.0.1.telus.com. IN NAPTR 8 0 "u" "sip+E2U" > "!^(.*)(....)(..)$!sip:\\1@154.11.143.16;maddr=\\2.\\3.prim-sc.RL.telus.com;x-nortel-profile=canadian.destinations;lata=0000;tgrp=EGRESS;name=example;place=india;animal=peacock;thing=wheel;test1=AAAA;test2=BBBB;test3=CCCC;test4=DDDD;test5=EEEE;test6=FFFF;test7=GGGG!". > > I am getting Error as below: > # named-checkzone telus.com telus.zone > dns_rdata_fromtext: telus.zone:35: syntax error > zone telus.com/IN: loading from master file telus.zone failed: syntax error > zone telus.com/IN: not loaded due to errors. > > But if I have a reduced response removing few lines/characters as below > 5.4.7.7.7.0.1.telus.com. IN NAPTR 8 0 "u" "sip+E2U" > "!^(.*)(....)(..)$!sip:\\1@154.11.143.16;maddr=\\2.\\3.prim-sc.RL.telus.com;x-nortel-profile=canadian.destinations;lata=0000;tgrp=EGRESS;name=example;place=india;animal=peacock;thing=wheel;test1=AAAA;test2=BBBB;test3=CCCC;test4=DDDD;test5=EEEE;test6=FFFF!"; > > I have no issues with loading the Zone file > # named-checkzone telus.com telus.zone > zone telus.com/IN: loaded serial 2021033103 > OK > > My question: > > • Is there a limit to the number of characters in a Resource Record? > • If yes, is there a possibility to increase this limit in the RR? > Thanks in Advance > Harshith > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users