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Add relay support

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This commit is contained in:
Deon George 2023-04-28 15:16:31 +10:00
parent 5f3aec07cf
commit e7cb2ced7c
7 changed files with 35 additions and 12 deletions
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29
Dockerfile
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@ -6,14 +6,22 @@ FROM alpine
# Change to http respositories, so they we can cache the install packages
RUN if [ -n ${HTTP_PROXY} ] ; then sed -ie s'/https/http/' /etc/apk/repositories; fi
RUN apk add shadow && useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin && echo relay:SmTpR3l2Y | chpasswd
RUN apk add --no-cache postfix opendkim opendkim-utils \
&& gpasswd -a postfix opendkim
RUN apk add --no-cache postfix cyrus-sasl opendkim opendkim-utils
# Config postfix
RUN sed -ie 's%#mynetworks = hash:/etc/postfix/network_table%mynetworks = /etc/opendkim/signing/TrustedHosts%' /etc/postfix/main.cf \
&& echo -n 'bWVzc2FnZV9zaXplX2xpbWl0ID0gMjU2MDAwMDAKcXVldWVfbWluZnJlZSA9IDUxMjAwMDAwCg=='|base64 -d >> /etc/postfix/main.cf
RUN sed -ie 's%^#mynetworks = hash:/etc/postfix/network_table%mynetworks = /etc/opendkim/signing/TrustedHosts%' /etc/postfix/main.cf \
&& sed -ie 's%^#relay_domains = %relay_domains = lmdb:/etc/postfix/custom/transport%' /etc/postfix/main.cf \
&& echo 'transport_maps = lmdb:/etc/postfix/custom/transport' >> /etc/postfix/main.cf \
&& echo -n 'bWVzc2FnZV9zaXplX2xpbWl0ID0gMjU2MDAwMDAKcXVldWVfbWluZnJlZSA9IDUxMjAwMDAwCg=='|base64 -d >> /etc/postfix/main.cf \
&& echo -n 'c210cF9zYXNsX2F1dGhfZW5hYmxlID0geWVzCnNtdHBfdGxzX3NlY3VyaXR5X2xldmVsID0gZW5j\
cnlwdApzbXRwX3Nhc2xfcGFzc3dvcmRfbWFwcyA9IGxtZGI6L2V0Yy9wb3N0Zml4L2N1c3RvbS9z\
YXNsX3Bhc3N3ZApzbXRwX3Nhc2xfc2VjdXJpdHlfb3B0aW9ucyA9CnNtdHBfdGxzX0NBZmlsZSA9\
IC9ldGMvc3NsL2NlcnRzL2NhLWNlcnRpZmljYXRlcy5jcnQKc210cF91c2VfdGxzID0geWVzCiNy\
ZWxheWhvc3QgPSAvZXRjL3Bvc3RmaXgvY3VzdG9tL3JlbGF5X2hvc3QK'|base64 -d >> /etc/postfix/main.cf
COPY smtpd.conf /etc/sasl2/
RUN apk add shadow && useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin && echo relay:SmTpR3l2Y | chpasswd \
&& gpasswd -a postfix opendkim
# Enable DKIM
RUN mkdir /run/opendkim \
@ -27,12 +35,13 @@ b2wvcG9zdGZpeCBjaHJvb3QuCnNtdHBkX21pbHRlcnMgPSBpbmV0OjEyNy4wLjAuMTo4ODkxCiMg\
U2VuZCBtYWlsIHRoYXQgZG9lc24ndCBhcnJpdmUgZnJvbSB0aGUgbmV0d29yayB0aHJvdWdoIHRo\
ZSBzYW1lIG1pbHRlcgojIGFzIG91dGJvdW5kIG1haWwuCm5vbl9zbXRwZF9taWx0ZXJzID0gJHNt\
dHBkX21pbHRlcnMK' |base64 -d >> /etc/postfix/main.cf
COPY opendkim.conf /etc/opendkim
VOLUME ["/var/spool/postfix"]
EXPOSE 25
COPY opendkim.conf /etc/opendkim/
COPY signing /etc/opendkim/signing/
COPY init /sbin/
VOLUME ["/var/spool/postfix","/etc/postfix/custom"]
EXPOSE 25
# Starting
ENTRYPOINT [ "/sbin/init" ]

8
init
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@ -17,8 +17,12 @@ if [ -z "$@" ]; then
exit 1
fi
#/usr/sbin/saslauthd -m /run/saslauthd -a pam
#cd /etc/mail && make && make && exec /usr/sbin/sendmail -q1h -bD &
touch /etc/postfix/custom/relay_host
touch /etc/postfix/custom/sasl_passwd
postmap -o lmdb:/etc/postfix/custom/sasl_passwd
touch /etc/postfix/custom/transport
postmap -o lmdb:/etc/postfix/custom/transport
/usr/sbin/saslauthd -m /run/saslauthd -ca shadow
newaliases
postfix start
/usr/sbin/opendkim -P /run/opendkim.pid -u opendkim -f

0
signing/KeyTable Normal file
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0
signing/SigningTable Normal file
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0
signing/TrustedHosts Normal file
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7
smtp_relay_auth.cf Normal file
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@ -0,0 +1,7 @@
smtp_sasl_auth_enable = yes
smtp_tls_security_level = encrypt
smtp_sasl_password_maps = lmdb:/etc/postfix/custom/sasl_passwd
smtp_sasl_security_options =
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtp_use_tls = yes
#relayhost = /etc/postfix/custom/relay_host

3
smtpd.conf Normal file
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@ -0,0 +1,3 @@
/etc/sasl2/smtpd.conf:
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN