Does anything here stand out as wrong?
dns_available test: domain1.tld domain2.tld domain3.tld
I do hope that just modified the actual values and you don't literally have "domain1.tld" in there..
Other than that, it looks fine, but rather than ask us, why not ask spamassassin?
Just run:
spamassassin --lint
If it runs quitely, you're likely OK. If it complains about a line, you have something to fix, and you know which line number to fix.
