Wiki source code of Postfix configuration
Last modified by Alexandru Pentilescu on 2026/02/08 14:31
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1.1 | 1 | (% class="jumbotron" %) |
| 2 | ((( | ||
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| 5 | = VPS = | ||
| 6 | This will document my existing postfix installation. This is a mail server that I'm using to relay email notifications from my various docker containers to external email addresses owned by me or other people. | ||
| 7 | ))) | ||
| 8 | ))) | ||
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| 10 | (% class="row" %) | ||
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| 12 | (% class="col-xs-12 col-sm-8" %) | ||
| 13 | ((( | ||
| 14 | = Main configuration = | ||
| 15 | |||
| 16 | The following is the configuration of the /etc/postfix/main.cf file. | ||
| 17 | |||
| 18 | {{code language="INI"}} | ||
| 19 | # See /usr/share/postfix/main.cf.dist for a commented, more complete version | ||
| 20 | |||
| 21 | |||
| 22 | # Debian specific: Specifying a file name will cause the first | ||
| 23 | # line of that file to be used as the name. The Debian default | ||
| 24 | # is /etc/mailname. | ||
| 25 | #myorigin = /etc/mailname | ||
| 26 | |||
| 27 | smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) | ||
| 28 | biff = no | ||
| 29 | |||
| 30 | # appending .domain is the MUA's job. | ||
| 31 | append_dot_mydomain = no | ||
| 32 | |||
| 33 | # Uncomment the next line to generate "delayed mail" warnings | ||
| 34 | #delay_warning_time = 4h | ||
| 35 | |||
| 36 | readme_directory = no | ||
| 37 | |||
| 38 | # See http://www.postfix.org/COMPATIBILITY_README.html -- default to 3.6 on | ||
| 39 | # fresh installs. | ||
| 40 | compatibility_level = 3.6 | ||
| 41 | |||
| 42 | |||
| 43 | |||
| 44 | # TLS parameters | ||
| 45 | smtpd_tls_cert_file=/etc/letsencrypt/live/transistor.one/fullchain.pem | ||
| 46 | smtpd_tls_key_file=/etc/letsencrypt/live/transistor.one/privkey.pem | ||
| 47 | smtpd_tls_security_level=may | ||
| 48 | |||
| 49 | smtp_tls_CApath=/etc/ssl/certs | ||
| 50 | smtp_tls_security_level=may | ||
| 51 | smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache | ||
| 52 | |||
| 53 | |||
| 54 | smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination | ||
| 55 | myhostname = mail.transistor.one | ||
| 56 | alias_maps = hash:/etc/aliases | ||
| 57 | alias_database = hash:/etc/aliases | ||
| 58 | myorigin = /etc/mailname | ||
| 59 | mydestination = $myhostname, transistor.one, localhost.one, localhost | ||
| 60 | relayhost = | ||
| 61 | mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.16.0.0/12 | ||
| 62 | mailbox_size_limit = 0 | ||
| 63 | recipient_delimiter = + | ||
| 64 | inet_interfaces = all | ||
| 65 | inet_protocols = all | ||
| 66 | |||
| 67 | {{/code}} | ||
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| 70 | (% class="col-xs-12 col-sm-4" %) | ||
| 71 | ((( | ||
| 72 | {{box title="**Contents**"}}{{toc /}}{{/box}} | ||
| 73 | |||
| 74 | ))) | ||
| 75 | ))) |