Teh Kim Chooi: [ Charset ISO-8859-1 unsupported, converting... ] > Hi guys, > > i recently just setup a high volume postfix server, still in testing mode > before the server go for live, OS rhel 5.5 and postfix version 2.3.3
Which is no longer maintained. The last release was postfix-2.3.19 in August 2009. > time smtp-source -s 100 -l 409600 -m 100 -c -f [email protected] -t > [email protected] localhost:25 > > result is 0.5 second which looks fine, Here, your client IP address is 127.0.0.1 or ::1. > BUT when i use the server IP instead of localhost, my performance drop > > time smtp-source -s 100 -l 409600 -m 100 -c -f [email protected] -t > [email protected] 192.168.1.10:25 > > result is 5 seconds, which almost 10 times more. Here your client IP address is 192.168.1.10. The Postfix SMTP server looks up the host name. Apparently this times out after 5 seconds when looking up 192.168.1.10. Wietse
