2023-09-19 16:49:00 +02:00
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{ config, ... }:
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{
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2023-09-18 03:38:09 +02:00
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# Postfix relay configuration, see: https://www.postfix.org/STANDARD_CONFIGURATION_README.html#backup
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services.postfix = {
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enable = true;
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hostname = "mail-2.grzb.de";
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relayDomains = [
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"grzb.de"
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"nekover.se"
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];
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2023-09-19 16:49:00 +02:00
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sslCert = "${config.security.acme.certs."mail-2.grzb.de".directory}/fullchain.pem";
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sslKey = "${config.security.acme.certs."mail-2.grzb.de".directory}/key.pem";
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2023-09-18 03:38:09 +02:00
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extraConfig = ''
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message_size_limit = 20971520
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smtpd_relay_restrictions = permit_mynetworks reject_unauth_destination
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proxy_interfaces = 217.160.117.160
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relay_recipient_maps =
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2023-09-19 17:13:36 +02:00
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smtp_tls_ciphers = high
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smtp_tls_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL
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smtp_tls_mandatory_ciphers = high
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smtp_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL
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smtp_tls_mandatory_protocols = TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3
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smtp_tls_protocols = TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3
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smtpd_tls_auth_only = yes
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smtpd_tls_ciphers = high
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smtpd_tls_eecdh_grade = ultra
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smtpd_tls_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL
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smtpd_tls_loglevel = 1
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smtpd_tls_mandatory_ciphers = high
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smtpd_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL
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smtpd_tls_mandatory_protocols = TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3
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smtpd_tls_protocols = TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3
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tls_preempt_cipherlist = yes
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tls_random_source = dev:/dev/urandom
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2023-09-18 03:38:09 +02:00
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'';
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};
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}
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