Is it possible to send mail from one domain through different smtp services?

Question

Mail for domain

Hello. Always used 1 smtp to send emails. Now I want to send regular letters the old fashioned way (via Yandex smtp, incoming mail also works through Yandex mail for the domain), and do one-time mailings through Amazon SES. Accordingly, from ignorance of the processes, there is a fear that letters will be mistaken for spam, because. are now sent from different ip-addresses. Are there any configuration nuances or can I immediately start using the second smtp (after changing the spf record a little, adding 1 more domain there)?

Answer 1

Made a second call to find an answer. I seem to have found what I need
serverfault.com/a/102303
I have third-party services, so it's enough to configure the SPF record.