DKIM and OpenBSD

📆: 22 Aug 2017
🏷: Open bsd, Open smtpd, E mail, Dkim, Dkimproxy

Setting up DKIM key

  touch /etc/ssl/dkim-selector1.xn--ew8hgl.ws.key
  chmod 0640 /etc/ssl/dkim-selector1.xn--ew8hgl.ws.key
  chgrp _dkimproxy /etc/ssl/dkim-selector1.xn--ew8hgl.ws.key
  openssl genrsa -out /etc/ssl/dkim-selector1.xn--ew8hgl.ws.key 2048
  openssl rsa -in /etc/ssl/private/dkim-selector1.xn--ew8hgl.ws.key -pubout -out /etc/ssl/dkim-selector1.xn--ew8hgl.ws.pem

Setup DNS RR

  selector1._domainkey IN TXT "k=rsa; t=s; p=MHwwDQYJK ... OprwIDAQAB"

Install dkimproxy
```
  pkg_add dkimproxy
```
configure /etc/dkimproxy_out

enable and start dkimproxy_out

  rcctl enable dkimproxy_out
  rcctl start dkimproxy_out

configure and restart OpenSMTPD

  listen on lo0 port 10028 tag DKIM
  accept tagged DKIM for any relay
  accept from local for any relay via smtp://127.0.0.1:10027
  rcctl restart smtpd

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