It is interesting to note that there is a dedicated RR type for the SPF function, SPF RR type, but that is deprecated. Instead TXT RR type should be used. It is kind of backwards. Fighting the use of TXT records for various function would be a life-time struggle. Mats --- Mats Dufberg DNS Specialist, IIS Mobile: +46 73 065 3899<tel:+46%2073%20065%203899> https://www.iis.se/en/<http://www.iis.se/en> 9 maj 2025 kl. 08:26 skrev Lars-Johan Liman via Ns.se <ns.se@lists.iis.se>: ï»ż[Since others switched to English, I will too.] Hi Anne-Marie! I too was unaware of any conventions for doing this in the _DNS_, but I _am_ aware of the prolific abuse of TXT records for various and sundry kitchen-sink-like purposes, so your words didn't surprise me at all. If you _do_ find signs of this type of data being put into the DNS, please share them with me. For anyone who thinks that using TXT records to solve your custom problem is a quick and simple solution, think again. Or contact me, and I'll drag you out of that misconception ... And mind you: new record types are dirt cheap, and very easy to create and register. đ Cheers, /Liman #---------------------------------------------------------------------- # Lars-Johan Liman, M.Sc. ! E-mail: liman@netnod.se # Senior Systems Specialist ! Tel: +46 8 - 562 860 12 # Netnod AB, Stockholm ! http://www.netnod.se/ #---------------------------------------------------------------------- ns.se@lists.iis.se 2025-05-08 20:36 [+0200]: Hej, Jag har en frĂ„ga till alla DNS-gurus i vĂ€rlden. Det har ju dykt upp en del saker som man kan stoppa in i dns, som security.txt och robots.txt. Det senaste jag hör de var om llm.txt. Finns det och hur övertygar man en AI om att respektera respektive kringgĂ„ en sĂ„dan? Hur mĂ„nga txt finns det i vĂ€rlden. Liman och andra, som försvarat dns frĂ„n onödig börda genom Ă„ren, hur ser ni pĂ„ det? MĂ„nga hĂ€lsningar, Anne-Marie ________________________ Anne-Marie Eklund Löwinder Amelsec AB HĂ€gervĂ€gen 27, 122 39 Enskede +46 734315310 @amelsec.bsky.social -- Ns.se mailing list -- ns.se@lists.iis.se To unsubscribe send an email to ns.se-leave@lists.iis.se -- Ns.se mailing list -- ns.se@lists.iis.se To unsubscribe send an email to ns.se-leave@lists.iis.se