_spf.huji.ac.il has no MX records.
Question and response
Question
dig _spf.huji.ac.il. MX
Answer
The response has no answer records.
Authority
huji.ac.il. 3600 SOA relay2.huji.ac.il. bindmaster.huji.ac.il. 2026021801 1800 600 1814400 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0