In addition to the DNSSEC issue:
That last TXT
record you have there, is not valid according to the expected outcome.
“include:_spf.sirvoy.com
” shouldn’t be standing alone like that, but be included in the appropriate SPF
record for the given (sub-)domain that Sirvoy’s booking software is sending with.
A proper record would be like “v=spf1 include:_spf.sirvoy.com -all
”, assuming that you’re only using Sirvoy to send messages using the given (sub-)domain.