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Setup SENDMAIL on Mac OSX Yosemite
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sendmail_setup.md

SENDMAIL on MAC OSX Yosemite

http://www.garron.me/en/mac/postfix-relay-gmail-mac-os-x-local-smtp.html

  1. Create a file to store our credentials:
sudo vim /etc/postfix/sasl_passwd
  1. Add something like this:
smtp.gmail.com:587 [email protected]:password
  1. Now run:
sudo postmap /etc/postfix/sasl_passwd
  1. Prepare the postfix main config file:
sudo vim /etc/postfix/main.cf
  1. Add/update these lines
    relayhost=smtp.gmail.com:587
    smtp_sasl_auth_enable=yes
    smtp_sasl_password_maps=hash:/etc/postfix/sasl_passwd
    smtp_use_tls=yes
    smtp_tls_security_level=encrypt
    tls_random_source=dev:/dev/urandom
    smtp_sasl_security_options = noanonymous
    smtp_always_send_ehlo = yes
    smtp_sasl_mechanism_filter = plain
  1. Stop/Start the service
sudo postfix stop && sudo postfix start
  1. Check the queue for any errors
mailq
@ddaddy
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ddaddy commented Feb 19, 2021

Yes. Unfortunately it seems on Big Sur it's not possible to amend the permissions chown: /usr/libexec/postfix: Operation not permitted as the root is now readonly.

@TonReurts
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TonReurts commented Nov 28, 2022 •
edited
Loading

After this setup I get the following error:
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
0B3D68C4939 1669 Mon Nov 28 11:31:59 [email protected]
(Temporary lookup error)
[email protected]
What setting have I done wrong?

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