[dns-operations] creeping poorness of judgement

Paul Vixie paul at redbarn.org
Sat Mar 14 01:16:09 UTC 2020


today i got mail including this:

<jabley at hopcount.ca>: host aspmx.l.google.com[2607:f8b0:400e:c08::1b] said:
    550-5.7.26 This message does not have authentication information or fails
    to 550-5.7.26 pass authentication checks. To best protect our users from
    spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
    https://support.google.com/mail/answer/81126#authentication for more 550
    5.7.26 information. l73si7852706pfd.109 - gsmtp (in reply to end of DATA
    command)

this is because i had no SPF record in my domain's TXT RRset. now, SPF is a 
bone headed idea and badly implemented, but i never cared until today because 
the lack of an SPF record inside my domain's TXT RRset never mattered.

i briefly considered adding such a record until i found that only one TXT 
string is permitted, so TXT "v=spf1 mx" not TXT (v=spf1 mx) in the zone file.

i guess i'll just add one with "v=spf1 +all" to shut google up?

or perhaps i'll just ignore the error and stop e-mailing joe abley.

so many ignorant and poor judgements shaping this future.

-- 
Paul




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