I'm using KeyHelp and the DNS are on CloudFlare. In general seems to be working but I'm having some email errors on log, for example:
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host vip-us-br-mx.terra.com[208.84.244.133] refused to talk to me: 554 mail-cmgw10-mia.tpn.terra.com cmsmtp Client host rejected: cannot find your hostname 149.28.46.132
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host mx-vip-01-farm74.uni5.net[177.185.202.35] said: 450 4.7.25 Client host rejected: cannot find your hostname, [149.28.46.132] (in reply to RCPT TO command)
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host mail.agricultura.gov.br[201.57.198.136] refused to talk to me: 554 5.7.1 Delivery not authorized
And is there any place to check logs for all IN and OUT emails? Or should be manual using command line?
Thanks people!