Forward email to external domain

[Joxit]

Hi there, thank you for this amazing project!

I'm using the project for some months now and I wanted to know if it was possible to forward mails to another domain not owned by us?

Like mails sent to [email protected] will be automatically forwarded to [email protected]?

I tried the alias configuration but didn't worked, I wasn't able to receive mails.

[mdecimus]

Hi,

Have you tried using the envelope rewriting feature? It is available as a configuration setting and also from Sieve scripts.

[Joxit]

Hi, thanks for your response ! I found the solution with Sieve scripts and redirect 😄

And thank you for this amazing project 😄

[blqdev]

Where and how do I upload and activate the script? Adding the script to the UI (Settings > Scripting > System Scripts) doesn't seem to have an effect.

[Joxit]

Hi, thank you for your hint.
So I tried Sieve Scripts does receive the mail with the redirect and copy (to save a version on the server)!
Here is my script:

[session.data]
script = "gmail"

[sieve.scripts]
gmail = '''
    require ["copy"];
    redirect :copy "[email protected]";
'''

[dcox761]

I have been trying to do the equivalent of Postfix virtual alias maps for a distribution list that includes external email addresses.

This method is not working for me as the from address is empty.

2024-09-20T13:05:23Z INFO SMTP MAIL FROM rejected (delivery.mail-from-rejected) queueId = 198301500195573824, from = <>, to = ["[email protected]"], size = 3315, total = 1, hostname = "email-smtp.ap-southeast-2.amazonaws.com", causedBy = SMTP error occurred (smtp.error) { details = Unexpected SMTP Response, code = 501, reason = "Invalid MAIL FROM address provided" }, elapsed = 2ms

This method from another discussion hasn't helped.

    require ["copy"];
    set "FromOrig" "${envelope.from}";
    deleteheader "From";
    addheader "From" "[email protected]";
    addheader "Reply-To" "${FromOrig}";
    redirect :copy "[email protected]";

Thanks,
Daniel.

[dcox761]

I have found a workaround for an example distribution list [email protected] on pretend domain example.au.
It correctly sends to local user [email protected] and external user [email protected].
Both recipients see the original sender in From.
The local user [email protected] does not receive the email (as required) since the to envelope is rewritten.

Minor Limitations: Both recipients see the original To address [email protected] (probably expected). It is not possible to use more than 1 external address in the envelope.to.

if address :is "To" "[email protected]" {
    # must use :copy or the duplicate DKIM signature error will occur, even with header removed
    redirect :copy "[email protected]";
    deleteheader "DKIM-Signature";
    set "envelope.from" "[email protected]";
    # cant use multiple to here!
    set "envelope.to" "[email protected]";
}

[blqdev]

Where and how do I upload and activate the script? Adding the script to the UI (Settings > Scripting > System Scripts) doesn't seem to have an effect.

[mqu]

I am trying do make this feature, as "per user" redirect.

[seakrebel]

Little late on this topic, but it doesn't work for me.
Anything changed with newer versions?

I want to auto-forward/redirect e-mails coming to a specific e-mail address in Stalwart, to an external gmail address. Similar to auto-forwarding feature in most e-mail servers.

[europacafe]

+1