Mail on main domain, yunohost on subdomain

Discuss Advanced use case
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4

Okay,

it worked, like you said.

For reference i try to describe my setup in some detail:

Domain

  • Yunohost runs under yunohost.example.com, the DNS is set up according to the generated DNS config by Yunohost
  • The domain example.com was added as well, but only the DNS entries corresponding to mail were added.
    Additionally the mx entry for example.com points to 10 yunohost.example.com

Mail with wildcard aliases

  • The users get wildcard aliases to their primary mail in the form of *username@example.com this is achieved by a post-user-create-hook which adds the wildcard to the postfix config.
  • Postfix should recognize these aliases, therefore /etc/postfix/main.cf needs to be altered, to preserve this change upon upgrades I created a conf-regen-hook. After upgrade one should execute sudo yunohost conf-regen postfix --force then the updated config can take place with the reference to the regex-aliases.
  • Reference: Mail alias with wildcard - #4 by Martin

/etc/yunohost/hooks.d/conf_regen/20-postfix_modifications

#!/bin/bash

action=$1
pending_dir=$4
postfix_conf=$pending_dir/../postfix/etc/postfix/main.cf

# Check if everything is in place
[[ $action == "pre" ]] || exit 0
[[ -e $postfix_conf ]] || exit 0

# Include Regex Aliases
awk -i inplace '{if (/^virtual_alias_maps = /) {$0=$0 ",regexp:/etc/postfix/aliases-regexp"}; print}' $postfix_conf

# Comment out sender mismatch verification
# To send mails from *@mydomain.org
sed -e '/reject_sender_login_mismatch/ s/^#*/#/' -i $postfix_conf

/etc/yunohost/hooks.d/post_user_create/10-new-user-postfix-regex

#!/bin/bash

echo "/.*$YNH_USER_USERNAME@example\.com/ $YNH_USER_MAIL" | cat - /etc/postfix/aliases-regexp > temp && mv temp /etc/postfix/aliases-regexp

postmap /etc/postfix/aliases-regexp
systemctl restart postfix

After all, I’m no expert in all of this, so if you find errors or wildly exotic handling of configs, I’m more than happy if you tell me.
Best regards
Samuel

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