eea / eea.docker.postfix Goto Github PK

View Code? Open in Web Editor NEW

24.0 41.0 16.0 41 KB

Shell 71.33% Dockerfile 28.67%

eea.docker.postfix's Introduction

Postfix SMTP only with relay support

Postfix SMTP only Docker image with SMTP relay support.

CentOS: 7
Postfix: 2.10.1
Expose: 25

Supported tags and respective Dockerfile links

:latest Dockerfile - CentOS: 7 Postfix: 2.10.1

Stable and immutable tags

:2.10-3.7 Dockerfile - Postfix: 2.10 Release: 3.7

See older versions

Base docker image

hub.docker.com

Source code

github.com

Usage

Start postfix (to send emails using postfix within container)

$ docker run --rm --name=postfix \
             -e  MTP_HOST=foo.com \
         eeacms/postfix

or start postfix (to send emails by using a remote email server)

$ docker run --rm --name=postfix \
             -e MTP_HOST=foo.com \
             -e MTP_RELAY=smtp.gmail.com \
             -e MTP_USER=foo \
             -e MTP_PASS=secret \
         eeacms/postfix

Start sending emails:

$ docker run -it --rm --link=postfix busybox sh
  $ telnet postfix 25
  HELO foo.com
  MAIL FROM: [email protected]
  RCPT TO: [email protected]
  DATA
  subject: Test
  Testing 1, 2, 3
  .
  quit

Supported environment variables

MTP_HOST The myhostname parameter specifies the internet hostname of this mail system
MTP_DESTINATION The mydestination parameter specifies the list of domains that this machine considers itself the final destination for.
MTP_BANNER The smtpd_banner parameter specifies the text that follows the 220 code in the SMTP server's greeting banner.
MTP_RELAY The relayhost parameter specifies the default host to send mail to when no entry is matched in the optional transport(5) table.
MTP_RELAY_DOMAINS The relay_domains parameter restricts what destinations this system will relay mail to.
MTP_PORT The relayhost port.
MTP_USER The user used to connect to the relayhost.
MTP_PASS The password used to connect to the relayhost.
MTP_INTERFACES The inet_interfaces parameter specifies the network interface addresses that this mail system receives mail on.
MTP_PROTOCOLS The inet_protocols parameter specifies the network interface protocol. Can be set to all, ipv4,ipv6 or ipv4,ipv6. The default value is all.
MTP_MS_SIZE_LIMIT If set, will configure email size limit.

Copyright and license

The Original Code is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Funding

European Environment Agency (EU)

eea.docker.postfix's People

Contributors

Stargazers

Watchers

Forkers

snowygoose danielm-gh eubnara cristiroma fw8 xrowgmbh nest-don suporteits redbeard28 streamtv85 nirnx foster2 daemondev sdgmihai loganwoodxyz vencis

eea.docker.postfix's Issues

README example: alpine containers don't contain telnet by default

Since alpine 3.7 the container does not contain the telnet command any more, breaking the README example.

Possible solutions:

Use a different base image for the example
Modify the example to use alpine 3.6

unable to send mail

I use email generated using https://www.fakemail.net/ for testing as

docker run -d --name=postfix -e MTP_HOST=andyes.net -e MTP_RELAY=mail.andyes.net -e MTP_USER=ferdinand.sutton -e MTP_PASS=gfqkc2K@ eeacms/postfix

and on its log I got

Jun 22 17:33:52 90c24854f4ca chaperone[1]: Switching all chaperone logging to /dev/log
Jun 22 17:33:52 90c24854f4ca chaperone[1]: chaperone version 0.3.9, ready.
Jun 22 17:33:54 90c24854f4ca postfix-script[139]: starting the Postfix mail system
Jun 22 17:33:55 90c24854f4ca master[141]: daemon started -- version 2.10.1, configuration /etc/postfix

So I connected to the container using

docker run -it --rm --link=postfix busybox sh

and run the following commands

 telnet postfix 25
(->gave output>  Connected to postfix
(->gave output>  220 andyes.net ESMTP Postfix
HELO andyes.net   (->gave output>  250 andyes.net
MAIL FROM: [email protected]    (->gave output> 250 2.1.0 Ok
RCPT TO: [email protected]  (->gave output> 250 2.1.5 Ok
DATA   (->gave output> 354 End data with <CR><LF>.<CR><LF>
DATA
subject: Test
Testing 1, 2, 3
.     (->gave output>   250 2.0.0 Ok: queued as E0C8913F488
quit   (->gave output>  221 2.0.0 Bye

but I didn't get any mail. I tried the reciving end as my mail also but I don't receive anything.
Please help me out

Container will fail in Openshift

This would happen if you start the container in openshift.

[root@localhost ~]# docker run -u 1001 --group-add=0  -i -t eeacms/postfix  
Unable to find image 'eeacms/postfix:latest' locally
Trying to pull repository docker.io/eeacms/postfix ... 
sha256:81a71e74e0ffdbe7f3aad51229d0668837fb8f12e43475995d398d2cb4a5e18e: Pulling from docker.io/eeacms/postfix
7dc0dca2b151: Pull complete 
6ecac0ae0f79: Pull complete 
ba93fb51ff11: Pull complete 
37ac39bd1cd8: Pull complete 
5e284f9a79e0: Pull complete 
6c8d417df31f: Pull complete 
Digest: sha256:81a71e74e0ffdbe7f3aad51229d0668837fb8f12e43475995d398d2cb4a5e18e
Status: Downloaded newer image for docker.io/eeacms/postfix:latest
syslog service cannot be started: [Errno 13] Permission denied: '/dev/log'
command service cannot be started: [Errno 13] Permission denied
postconf: fatal: open /etc/postfix/main.cf.tmp: Permission denied
postconf: fatal: open /etc/postfix/main.cf.tmp: Permission denied
postalias: fatal: open database /etc/aliases.db: Permission denied
postfix.service terminated abnormally with <ProcStatus exit_status=1>
setup.service terminated abnormally with <ProcStatus exit_status=1>

Add a param for inet_protocols

Hi !

Doesn't work here, it seems because it's trying to send through ipv6. Would it be possible to add the inet_protocols parameter, allowing to use ipv4 only ?

Thanks !

$MTP_RELAY in relay_passwd should be inside square bracket

I find out it didn't work out using a relay, thus when I put the $MTP_RELAY within a square bracket it worked fine.

Like this one

echo "[$MTP_RELAY]:$MTP_PORT $MTP_USER:$MTP_PASS" > /etc/postfix/relay_passwd