Answer by joseph for Postfix - Host or domain not found
The simple Postfix configuration that worked for me. /etc/postfix/main.cf myhostname = localhost.testing.com myorigin = testing.com relayhost = inet_protocols = ipv4 inet_interfaces = loopback-only...
View ArticleAnswer by selche for Postfix - Host or domain not found
The following change in /etc/postfix/main.cf solved the problem for me. inet_protocols = ipv6 Change the above to inet_protocols = all
View ArticleAnswer by Jenny D says Reinstate Monica for Postfix - Host or domain not found
Your server is trying to use IPv6 when sending the mail. Since the mail.example.com doesn't have an AAAA-record (which is the same as an A-record, but for IPv6), that isn't working. If you want Postfix...
View ArticlePostfix - Host or domain not found
I've just installed Postfix on my Ubuntu, on a local network. On this network, I have an Exchange Server (using domain mail.example.com). I had a problem sending an email to a local address:...
View ArticleAnswer by Denis Astahov for Postfix - Host or domain not found
I able to resolve it by telling to Postfix to use Google DNS , right after Installing postfix:echo 'nameserver 8.8.8.8'>> /var/spool/postfix/etc/resolv.conf
View ArticleAnswer by Andrey for Postfix - Host or domain not found
The following change in /etc/postfix/main.cf solved the problem for me.disable_dns_lookups = yes
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