Sieve not working

chimeranzl

I have mailcow installed in a docker container and all is working well

I’ve setup an alias as a ‘mailing list’ which also works fine.

I’m now trying to configure a Sieve global prefilter (or post filter) to deny emails to the mailing list address unless its sent from a specific local admin mailbox only. If I send emails externally (from private email address) to the mailing list to test it, they still get sent to all alias addresses - the sieve filter isnt kicking in. I cant tell if its a sieve syntax issue or whether sieve is simply not running (how do I tell?) The script is simply:

# Check if the email is to members
if address :is "to" "members@domain.com" 
{
   if address :is "from" "admin@domain.com"
   {
      keep;
   } 
   else 
   {
      discard;
      stop;
   }
}

What am I doing wrong? Internet emails aredelivered direct to mailcow via SMTP (no sync jobs or fetch mail)

chimeranzl

Seems that this works if the email address in the To field is a mailbox, but doesnt work if its an alias

Any other way around this?

chimeranzl

Workaround I’ve done is create a mailbox with members@domain.com, create a cryptic alias, like sdaf902349r123@domain.com and add mailing list members email addresses too it, create a BCC recipient map under ‘Address rewriting’ so members@domain.com goes to the cryptic alias email address, then create a global pre-filter so that…

if address :is "to" "members@domain.com" 
{
   if not address :is "from" "admin@domain.com"
   {
      reject "You do not have permissions to email this mailing list";
      discard;
      stop;
   }
}

This works, only issue is rspamd daemon adds a received header to the email that has the cryptic email address in it. Only visible to those that know how, but still be nice to omit it. Anyway to remove this?!

Feel like Im chasing my tail here