On Tue, Mar 10, 2020 at 10:53:02PM +1100, li...@sbt.net.au wrote: > Mar 10 00:10:50 geko postfix/cleanup[9389]: C099F42B0143: > message-id=<5262b5f4-18d5-b7fb-b09a-be37f1d61b9e@a_tld.com> > Mar 10 00:12:38 geko opendkim[1322]: C099F42B0143: DKIM-Signature field > added (s=default, d=a_tld.com) > Mar 10 00:12:39 geko opendmarc[1295]: C099F42B0143: SPF(mailfrom): > bb@a_tld.com fail > Mar 10 00:12:39 geko opendmarc[1295]: C099F42B0143: a_tld.com fail
So were the milters slow, or the message transmission slow? Also, while you may want to DKIM-sign submission traffic, what's the purpose of DMARC in this case? I'd expect that SPF and DMARC checks are not relevant for submission, and not should not be turned on. -- Viktor.