Samuel Sappa a écrit : > I have problem with my postfix, a few days ago my smtpd running very > slow, when delivering message (using MUA outlook,TB,OE) message > delivering very slow, but if user using web mail which is using > openwebmail the deliver running fine without the delay, I came to > conclusion that, when postfix sending outgoing message using IP > address having delay, but when using 127.0.0.1 the outgoing message is > sending without delay. I also testing the connection from the machine > using telnet to the IP idddress, response are very slow, but when I > using telnet and connect to 127.0.0.1 the response is normal.
maybe a (reverse) dns resolution issue. when postfix gets a connection, it looks up the IP in DNS. if you have no DNS server for your private IPs, then your system will query external DNS servers, which takes times (besides generating useless traffic). > I > already restore my postfix parameter to original value(main and > master.cf) and set the inet_interface= 127.0.0.1 but still the problem > exits, > my question is > 1.If I added another interface (LAN Card and assign new IP address) > for outgoing smtpd, shall the problem will be solved ? > 2.if there any possibilities that my machine already became open relay > or that my smtp hijack by another people ? > 3.I am using untangle for my anti spam, and according the untangle > report spam traffic is high, is this another event that caused my > problem with my smtpd ? > > that's all from me thank for your kind help and suggestion >
