Helo command rejected: need fully-qualified hostname
When I try sending e-mails to certain domains I get this error:
Helo command rejected: need fully-qualified
hostname (in reply to RCPT TO command)
I have been looking around but can't seem to find a solution, I got my ISP to setup reverse DNS and everything as far as I know is setup correctly, any help please?
I am running ISPConfig 2.2.15 on Debian 4.0
I am going to keep looking around but I need this fixed ASAP since a majority of my clients I have to e-mail I can't send e-mails to them!
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