The Israeli ISP 012.net has many aliases for its e-mail addresses: 012.net.il, smile.net.il, inter.net.il, etc.
What's in common is that messages sent from those addresses don't even count in the statistics. As if they were never sent in the first place.
Sometimes such senders get back a "your message couldn't be delivered for X hours..." message.
It has been like this for years. Will it ever be fixed?
They have webmail at http://newmail.012.net.il - I have a user/password for it, so someone like Josh could initiate outgoing messages for testing.
Josh, can you please test it?