Well, my personal suggestion is, just use one delimiter.

This don't fix https://github.com/iredmail/iRedAPD/blo … ch.py#L287

I disable the plugin for 2 domains.

I suggest just using only one delimiter (+), and use sieve rule to filter / move emails sent from different websites.

No, i need both
Because I already have some user+website and user_website
But more because a lot of website disallow + inside email username.

@chris.23lo, question is more about sending email, but right, seems need to update
this request https://github.com/iredmail/iRedAPD/blo … ch.py#L287

Do you do it yourself ?

But unsure if you talk for https://docs.iredmail.org/user.alias.ad … -addresses : this part work good, shadowAddress can be used for all sender.

I think i disable this plugin, not really needed for me.

I add _ for recipient delimiter , in postfix main.cf  (because a lot of website disallow + in email)

/etc/postfix/main.cf:recipient_delimiter = +_

It work to get the email
But when i try to send an email with user_test@example.org : i get Recipient address rejected: Sender is not same as SMTP authenticate username

2024-12-12T09:26:39.000532+01:00 nedra postfix/submission/smtpd[363030]: NOQUEUE: reject: RCPT from ****.net[**.**.**.**]: 554 5.7.1 <test@example.com>: Recipient address rejected: Sender is not same as SMTP authenticate username; from=<user_test@example.org> to=<denis@sondages.pro> proto=ESMTP helo=<[192.168.1.161]>

I try to add it in dovecot.conf too

/etc/dovecot/dovecot.conf:    recipient_delimiter = +_

Seems to don't broke something, but still can not send email with such user.

Where can i adapt configuration ?

Thank you,
Denis