Rewrite outgoing email address

[france (Francesco)]

Hello everyone, is it possible to rewrite the email address of a user when sending an email? Eg user@mydomain.local in user@domainexample.com

[pike (Michael Kicks)]

Setup in the “right” (for your setup) way your email client.
App on mobile device
Client on PC
Webmail interface on the user.

[france (Francesco)]

Thanks Michael, I already do this, but there are applications like Nextcloud that do not allow you to change the user’s email address, at least I didn’t succeed. So as a basic setting I don’t have the ability to do this. I know for sure because I’ve done it in the past that postfix can rewrite the source email address in another address.

[pike (Michael Kicks)]

Magical word “postifx” missing from the first post…
Sorry for bugging you for the obvious.
Are you sure that you cannot change the FDQN of your server from mydomain.local to domainexample.com?

EDIT: AFAIK via configuration fragment you should be able to achieve the goal you’re looking for, but i cannot help you on how create it. Use “fragment” and “postfix” into search

[france (Francesco)]

So what I want to do is simply have the possibility to change or rather to rewrite the outgoing email address, that of changing the domain is not mentioned.

[dnutan (Marc)]

Maybe not exactly what you ask but close enough:

Email Domain Aliases don't appear to work

Not sure if the solution I use is relevant here. I have the situation where there are multiple mail domains/sub-domains to accept and all I wanted to achieve was postfix to auto rewrite the domain portion of the address to deliver to the prime domain mailbox. eg: {username}@<second.domain> is accepted, rewritten and delivered to {username}@<primary.domain> without needing to add an email alias for each user. To do this, I have added: canonical_maps = regexp:/etc/postfix/rewrite to /etc/post…

[france (Francesco)]

http://www.postfix.org/ADDRESS_REWRITING_README.html

• Replace an internal address by an external address. For example, replace “username@localdomain.local” by “isp-account@isp.example” when sending mail from a home computer to the Internet.

[saitobenkei]

Sending Email from Secondary Domain

Try this: I wrote this on the fly and haven’t tested if it works… but it should First you need the directory structure that contains the main.cf fragment mkdir -p /etc/e-smith/templates-custom/etc/postfix/main.cf cd /etc/e-smith/templates-custom/etc/postfix/main.cf Then create the fragment of the file: vi 41sender_maps and in 41sender_maps just write this line smtp_generic_maps = hash:/etc/postfix/sender_rename Save the file and give the command to regenerate /etc/postfix/main.cf expand…

[rant] Si’, ma un po’ di ricerche nel forum fatele… non posso mica star sempre li’ a ricordarmi le cose io. [/rant]