кетмар - пидор
Authenticate your mail

Emails without authentication often get rejected or marked as spam to protect recipients from phishing scams. Unauthenticated emails with attachments might get completely rejected for security reasons.

To ensure Gmail can authenticate you:

Send from the same IP address
Keep valid reverse DNS records your IP address that point to your domain
Choose the same address in the 'From:' header for every bulk message

Other recommendations

Sign messages with DKIM. We don't authenticate messages signed with keys that use fewer than 1024 bits.
Publish a SPF record.
Publish a DMARC policy.

Learn more about email authentication.
IP guidelines

The sending IP must have a PTR record (i.e. a reverse DNS of the sending IP) and match the IP obtained via the forward DNS resolution of the hostname specified in the PTR record.
The sending domain should pass either a SPF check or DKIM check.

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но русня же самая умная, нахуй ей доказывать что она не русня.