Apr 18, 2024 · Contact the server hoster or provider of the IP address in order to correct PTR record and make it pointing to the mail server hostname. For ...
Nov 8, 2013 · I strongly suggest that you double check that your IP, or sending domain, is not indicated as an offending one by SPAM designators.
Jun 4, 2019 · @Vietyank the process is the domain name resolution, when DNS server fails to return expected answer then this process fails. In your case DNS ...
Aug 22, 2018 · I'm currently messing around with my mail-setup here. Everything is working properly except receiving mails (which should obv. work). I'm running the setup in ...
Apr 14, 2020 · This specific error seems to have something to do with the PTR record for the server. How do i fix this problem.
Oct 14, 2020 · Our e-mails are getting queued, because "450 3.7.1 Client host rejected: cannot find you hostname, [...] (in reply to RCPT to command)"
Aug 28, 2020 · If you have contact info for their admins you can chat with them to see if they are doing any reverse lookups on the domain of the sending ...
Feb 16, 2021 · Checks against the hostname are needed to ensure that the hostname is properly resolving to the server. Here are the commands needed to perform this check.
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What does client host rejected access denied mean?
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Feb 8, 2019 · You should be able to force a PTR record through unbound by adding the following to data/conf/unbound/unbound.conf in the server block.
Dec 23, 2018 · To avoid this error message, the reverse entry of an IP must match the domain name. This can be checked with the two commands nslookup [IP-des- ...
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