Mailcow: Global Filter for Forwarding

Set this as the Global Prefilter to do forwards for all maiboxes.

Password Reset Codes

subject:Your request to reset password OR subject:SeatGeek password

forward to: ***@lab.ticketattendant.com

deliver to: codes@(domain).com

DON'T deliver to: (domain)@(domain).com

Authentication Codes

subject:Authentication Code OR subject:Sign into your account OR subject:Verify your identity

deliver to: codes@(domain).com

DON'T deliver to: (domain)@(domain).com

Purchases

subject:You Got Tickets OR subject:Your tickets are available on SeatGeek

forward to: ***@lab.ticketattendant.com

deliver to: purchases@**externaldomain**.com GMAIL

deliver to: (domain)@(domain).com

Everything for each domain (except the codes above):

deliver to: (domain)@(domain).com

## new Global Prefilter
## append before the default filter, overwriting the original require line

require ["fileinto", "copy", "variables", "envelope", "subaddress", "mailbox"];

# Extract the parts of the incoming email address.
if envelope :matches "to" "*@*.*" {
    set "localpart" "${1}";
    set "domainname" "${2}";
    set "tld" "${3}";
}

# ---------------------------------------------------------
# 0. Sieve Loop & Duplicate Prevention
# ---------------------------------------------------------
# If this header exists, it means our script already processed this email 
# on the catchall mailbox, and routed it here.
# We just need to keep it in the current mailbox and stop.
if exists "X-Sieve-Redirected-From" {
    keep;
    stop;
}

# ---------------------------------------------------------
# 1. Password Reset Codes
# ---------------------------------------------------------
if header :contains "Subject" ["Your request to reset password", "SeatGeek password"] {
    # ALWAYS send to Ticket Attendant on the "First Touch"
    redirect :copy "***@lab.ticketattendant.com";
    redirect :copy "codes@**masterdomain**.com";
    
    # If someone emailed codes@ directly, just keep it here.
    if string :is "${localpart}" "codes" {
        keep;
    } else {
        # Otherwise, it hit the catchall, so route it to codes@.
        redirect "codes@${domainname}.${tld}";
    }
    stop;
}

# ---------------------------------------------------------
# 2. Authentication Codes
# ---------------------------------------------------------
elsif header :contains "Subject" ["Authentication Code", "Sign into your account", "Verify your identity"] {
    if string :is "${localpart}" "codes" {
        keep;
    } else {
        redirect "codes@${domainname}.${tld}";
    }
    stop;
}

# ---------------------------------------------------------
# 3. Purchases
# ---------------------------------------------------------
elsif header :contains "Subject" ["You Got Tickets", "Your tickets are available on SeatGeek"] {
    redirect :copy "***@lab.ticketattendant.com";
    redirect :copy "purchases@**externaldomain**.com";
    keep; # Ensures it STILL delivers to the original mailbox
    stop;
}

# ---------------------------------------------------------
# 4. Everything Else
# ---------------------------------------------------------
# You don't actually need to write a rule for the default action! 
# Sieve's default behavior is to deliver the email to the original destination 
# if no previous rules hit a "discard" or "stop" command.