now never comes. What to do?
To begin to examine the headers sent letters.
View don't come if you "clubbing" from Google.
Then examine the recommendations of Google for webmasters on this subject: https://support.google.com/mail/answer/81126?hl=en...
Actually, Google is quite strict, for example, if you Inbox the host will receive a letter, though, with Hotmail, which automatically onforwarded to your mailbox on Gimel, it also may simply not appear in the latter.
At SRS there would be something like
, but Google will focus on DMARC and wrap the letter with the phrase "... due to domain''s DMARC policy".
Read more on this account, look here: https://support.google.com/mail/answer/2451690