opendns2.tau.ac.il has no MX records.
Question and response
Question
dig opendns2.tau.ac.il. MX
Answer
The response has no answer records.
Authority
tau.ac.il. 86400 SOA aristo.tau.ac.il. ariel.aristo.tau.ac.il. 2025124942 5400 3600 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0