How to set up delivery to mail.ru inbox?

Question

Email

Hello!
Please help if anyone else has had a similar issue.
A bunch of mailwizz 1.5.1 + pmta 4.5, on one mailwizz server, on the second pmta is, domain tracking is configured for links and all signatures are dim and so on.
Now it’s a joke, all mailing goes through PMTA, BUT, if at the stage of creating a template in mailwizz send letters through a template test, then 100% inbox.
I checked against gray databases and my emails through the postmaster mailra.
And if you send a ready-made campaign to the mailing list, then everything is 100% spam on your domains and on the gray base at the smtp mail ru level and does not even reach the spam folder of the mailbox.
According to the pmt logs, it can be seen that letters in both the first and second cases go through it, but why can it be that when testing the inbox template. and when sending spam hard?
Thank you!