Hi, I run a Linux Server together with amavis and postfix. The Server is used as hub Server. Sometimes I have the issue, that mails are transfered with delay. I found the follwing lines in the log. Do you have an idea where this could come from: Code: Feb 12 08:02:16 ipx11111 amavis[7085]: (07085-09) FWD via SMTP: <[email protected]> -> <[email protected]>,BODY=7BIT 250 2.0.0 Ok, id=07085-09, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 13091EF8001 Feb 12 08:02:16 ipx11111 amavis[7085]: (07085-09) DSN: NOTIFICATION: Action:delayed, LOCAL 250 NonBlocking:BadHdrSpace, <[email protected]> -> <[email protected]> Feb 12 08:02:16 ipx11111 amavis[7085]: (07085-09) dkim: not signing, no applicable private key for domain <serverdomain>.de, s=, From: <postmaster@<serverdomain>.de> Thank you for your help!! Kind regards Alex