Any message to the Ministry of internal affairs and similar law enforcement entities can be easily sent through the official websites from almost any IP in the world.
Also, emails delivered through SMTP are not required to be officially processed according to legal procedures.
Denial of any information about danger is the same as ignoring the danger.
So, blocking of SMTP servers has zero resistance to such "attacks" and has nothing to do with public safety.
Right. It looks like a desperate measure and sticking one's head in the sand.