How to force mail.ru to accept letters?

Question

linux

Server on cloudmouse. I send emails using mail(). Letters reaching Google and Yandex boxes. They don’t reach mail.ru, not like in spam. How to solve this problem? Who faced?
ps. Googled first. spf, mx, dkim records are registered in dns.
upd: mail.ru swears at sender address:
2014-11-21 06:33:50 1Xrhmv-0007Ug-MK ** [email protected] R=dnslookup T=remote_smtp: SMTP error from remote mail server after MAIL FROM: SIZE =1696: host mxs.mail.ru [94.100.180.150]: 550 Unroutable sender address Unable
to change the address in Exim4 on the server, no rights (( Waiting for technical support)

Answer 1

What's in the logs of the sending server?
Does the letter leave normally, or is it immediately rejected?
If denied, with what error number and explanation?
In general, show the logs of sending.

Answer 2

2014-11-21 12:22:16 1XrnE8-0004dS-BW <= [email protected] U=admin P=local S=460
2014-11-21 12:22:17 1XrnE8-0004dS-BW ** [email protected] mail.ru R=dnslookup T=remote_smtp: SMTP error from remote mail server after MAIL FROM: < [email protected] > SIZE=1495: host mxs.mail.ru [94.100.180.150]: 550 Unroutable sender address
2014-11 -21 12:22:17 1XrnE9-0004dX-4i <= <> R=1XrnE8-0004dS-BW U=Debian-exim P=local S=1443
2014-11-21 12:22:17 1XrnE8-0004dS-BW Completed
2014-11-21 12:22:17 1XrnE9-0004dX-4i ** [email protected]: Unrouteable
address

Answer 3

You need to check which email is in Sender - it's not the same as From. For this Sender must have correct mx records. Thread about the difference between Sender and From