Am 14.10.2014 um 22:32 schrieb superstator .:
I have a poorly behaved voicemail system that I am trying to funnel through a postfix relay, and I haven't been able to get past the issue of the voicemail wanting to send a bare EHLO (no hostname supplied at all) at the beginning of every transaction. I started a question over at stackexchange about this (http://unix.stackexchange.com/questions/161901/disable-postfix-helo-checks-completely), and came to the conclusion that it's just not possible with postfix as is. Would this be worth considering as a new feature? It certainly wouldn't make sense as a default option, but as something one could deliberately enable it might be useful. What's the process if somebody wants to code a patch and submit it?
you need as always to show a complete log from connection to reject that we can see what really happens as well as "postconf -n"
if it is a static IP have you treid to add it to "mynetworks" and as said how does your config of postfix looks like!