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Phuong Nguyen 2020-02-18 11:43:21 +07:00
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M%E1%BB%99t-s%E1%BB%91-log-l%E1%BB%97i-c%E1%BA%A7n-quan-t%C3%A2m.md

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`451 <pmrp.dau-thau.com> does not have an MX record` `451 <pmrp.dau-thau.com> does not have an MX record`
## Server postman thiếu ip reverse DNS ## Server postman thiếu ip reverse DNS
`550-5.5.1 Your server IP address [171.244.9.123] is missing a reverse DNS 550-entry. See http://spamauditor.org/best-practices/check-ip-reverse-dns/ for 550-more information.. Protection provided by MagicSpam 2.1-12.1 550 http://www.magicspam.com` `550-5.5.1 Your server IP address [171.244.9.123] is missing a reverse DNS 550-entry. See http://spamauditor.org/best-practices/check-ip-reverse-dns/ for 550-more information.. Protection provided by MagicSpam 2.1-12.1 550 http://www.magicspam.com`
## IP đã bị block
`421 Your IP is blocked for a long time did not access.`