Postfix

Set up Postfix for Reply by email - GitLab Documentation

fatal: parameter inet_interfaces: no local interface found for ::1

When I tried to start postfix today, I got the following message:

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fatal: parameter inet_interfaces: no local interface found for ::1

Solution is straightforward:

  1. open /etc/postfix/main.cf
  2. comment out inet_interfaces: all
  3. add inet_protocol: ipv4

See Postfix cannot start on centos · Codinfox

Postfix Failed to start : unable to set exclusive lock: Resource temporarily unavailable

centos7 - Postfix Failed to start : unable to set exclusive lock: Resource temporarily unavailable - Server Fault

Connection refused on port 25?

I have Postfix running as the MTA, with iptables and SELinux off (just for the moment). I can telnet to localhost on port 25, but I cannot telnet from another host to port 25 and see the Postfix banner. I have mynetworks = host, and myorigin set as well. What am I missing?

See Connection refused on port 25? - CentOS

FAQ

How can I connect to postgresql

How can I connect to postgresql (#738) · Issues · GitLab.org / omnibus-gitlab · GitLab

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sudo -u gitlab-psql /opt/gitlab/embedded/bin/psql -h /var/opt/gitlab/postgresql -d gitlabhq_production