On 9/28/20 2:06 PM, PGNet Dev wrote: > already posted; waiting on any interest/reply there. > > useful to know that this is completely !postfix, if indeed the case.
ironically, the problem's NOT that postfix *is* 'involved', but that it *isn't*. use of dovecot's submission_host = ... to either have sieve use dovecot's own submission port, or even postfix's, was causal. switching - submission_host = ... + sendmail_path = "/usr/sbin/sendmail.postfix" to instead use postfix's sendmail binary does the trick. once the switch is made, sieve script generated forwards/redirects seem to work without error. ( i _do_ need to figure out how to correctly lock down use of the binary ... iiuc, i think this authorized_submit_users = root, filter, vmail in postfix conf should be sufficient. ) sounds like a dovecot submission proxy issue to me; any further chat about it I'll take to dovecot list.