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docker-postfix

docker postfix opendkim

easy to use.

run

DOMAIN_NAME=youdomain.com
DKIMDOMAIN=email

docker run -it --rm -e DOMAIN_NAME=$DOMAIN_NAME -e SELECTOR_NAME=$DKIMDOMAIN -e DKIMDOMAIN=$DKIMDOMAIN --name sendmail-dkim --hostname $DOMAIN_NAME -v dkimkey:/etc/dkimkeys -p 25:25 kasen/postfix-server

set DNS

look docker run logs, set DKIM / SPF record

DKIMDOMAIN._domainkey.DOMAIN_NAME TXT v=DKIM1; h=sha256; k=rsa; t=s; p=

selfspf.DOMAIN_NAME A your IPv4

selfspf.DOMAIN_NAME AAAA your IPv6

DOMAIN_NAME TXT selfspf.DOMAIN_NAME TXT v=spf1 include:selfspf.DOMAIN_NAME ~all

test

in docker,

sendemail -o message-charset=utf-8 -t [email protected] -f test@$DOMAIN_NAME -m "from test@$DOMAIN_NAME test email." -u 'test email : $(date)'