What rate limit for sending mail via SMTP mail.ru?

When sending emails via SMTP with corporate e-mail mail.ru - faced with the following error:

SMTPDataError(451, b Ratelimit exceeded for mailbox <hello@example.com>. Try again later.'</hello@example.com>


It is clear that you have exceeded a limit of send emails per unit time. The most important question - what is it? Wrote tech support, was told that it is confidential information - that kind of nonsense? Maybe someone knows what the rate limit?
July 9th 19 at 11:24
2 answers
July 9th 19 at 11:26
Solution
Ratelimit for external mail there is none of the major email providers. Your ability to make a large distribution depends on the accumulated reputation of your IP addresses, domains, DKIM, signatures, etc. to Take the base with the emails and start on her mailing list will not work. If earlier you did not do mailings, you no accumulated reputation, you will not be able to do a great newsletter because of the new service can not suddenly legally receive a large number of subscribers.

In situations where it is necessary, for example, has long been to move the existing emails from your ESP for resources - move it gradually - this is called "warm-up". Warming up allows you to accumulate reputation. Try to keep your newsletter contain more authentication information - PTRŅ‹, DKIM, SPF, DMARC to "warm up" are different entities, and that the mailing contained as little as possible debris. If you are going to send something bad - reputation, of course, save will not work.
PS here is an article about how the reputation works in Mail.Ru.
July 9th 19 at 11:28
in the mail is the dynamic limit, it is in gmail 300 / day

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