btb: > Jul 6 08:26:29 msa-aux postfix/example-internal/smtp[2553]: > 3h5pzz1NVpzyQm: to=<j...@example.com>, > relay=mta.example.com[10.3.70.5]:25, delay=6.4, delays=0.01/0.02/6.2/0.21, > dsn=2.1.5, status=deliverable (250 2.1.5 Ok)
It took 6.4 seconds to verify this recipient, of which 6.2 seconds were spent connecting over TCP and completing the SMTP handshake with the remote SMTP server. > this isn't consistent - most mail is verified and then relayed > successfully. it seems to happen once every few hundred messages > or so. how can i further troubleshoot why this is occurring? Find out why it takes 6.2 seconds to connect over TCP and to complete the SMTP handshake with the remote SMTP server. Wietse