Why Invision Power Board is not sending emails?

Good day! There is a forum on the Invision Power Board 3.4.6. Suddenly he stopped sending e-mail both administrators and users. When testing send mail "Support - Troubleshooting - check Email" says "Email successfully sent" but nothing comes up.

Interestingly, if you write a test script that uses mail class classEmail from a file \ipsKernel\classEmail.php test letters go. Ie not working sending of the IPB, although the mail() function in the end, all the required parameters ($to, $subject, $message, $rfc_headers) are transmitted and are quite correct values that I looked using echo/var_dump. And mail() gives true, despite the fact that the letter does not reach to any destinations.

In what direction to dig?

PS. Sweb hosting, tech support says nothing intelligible.
July 9th 19 at 10:05
3 answers
July 9th 19 at 10:07
Emails are sent not from ящик@mail.ru case?
from @mail.ru - on mail.ru. but I worked, stopped working when to another hosting moved. - lewis_Harber commented on July 9th 19 at 10:10
I know that the new php 5.6 requires a patch to the soap went on IPB but not to work with the patch. And on behalf ящик@mail.ru of test scripts, sending normal walking on the new hosting. - lewis_Harber commented on July 9th 19 at 10:13
I asked for this - https://corp.mail.ru/ru/press/releases/9593/ - Daphne_Roob commented on July 9th 19 at 10:16
Nifiga yourself! Framed Yandex-mail - and mail right now goes inside IPB! - lewis_Harber commented on July 9th 19 at 10:19
all this DMARC crap of course) - lewis_Harber commented on July 9th 19 at 10:22
: better register the address of the type info@site and submit it gradually DMARC is all. - Robb45 commented on July 9th 19 at 10:25
July 9th 19 at 10:09
See server logs. the mail queue and so on.
July 9th 19 at 10:11
Guys, this is a new DMARC policy from mail.ru nasty though)

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