450 4.7.1 Client host rejected: cannot find your hostname
Hello,
i need help regarding error while sending email to one of my clients. I'm getting this email in return:
Note: rDNS is set with main server IP 159.69.xxx.xxx, DMARC is set to email sending domain, exim is properly configured: - Reference /etc/mailhelo for custom outgoing SMTP HELO (ON) - Reference /etc/mailips for custom IP on outgoing SMTP connections (ON) Any suggestions to change in some settings on my server or this is the problem on other server receiving email? Thanks
SMTP error from remote mail server after RCPT TO:: 450 4.7.1
Client host rejected: cannot find your hostname, []Note: rDNS is set with main server IP 159.69.xxx.xxx, DMARC is set to email sending domain, exim is properly configured: - Reference /etc/mailhelo for custom outgoing SMTP HELO (ON) - Reference /etc/mailips for custom IP on outgoing SMTP connections (ON) Any suggestions to change in some settings on my server or this is the problem on other server receiving email? Thanks
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when was the DNS placed? it may be due to cache dns or propagation dns 0 -
The issue here is that the system cannot resolve your hostname to an IP address. Your PTR record notes omega.domain-cloud.net (i replaced the actual domain name) as the hostname but when I perform a dig query for the A record for that domain it does not come back with any results: [root@server ~]# dig a omega.domain-cloud.net +short [root@server ~]#0
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