Alan Maitland wrote:
"HELO example.com""v=spf1 ip:192.168.1.1 hello=cmtp1 -all"
- To mean example.com sends from IP 192.168.1.1 and uses cmtp1 hello
checking
example.com. IN TXT "v=cmtp1 -all"
- To mean example.com should not be seen as a HELO/ELHO
Is is sufficient to have following:
example.com. IN TXT "v=spf1 ip4:192.168.1.1 -all"
mxsender.example.com. IN TXT "v=spf1 ip4:192.168.1.1 -all"
And configure your MTA at 192.168.1.1 to say "HELO mxsender.example.com"
instead of "HELO example.com". Mail not from 192.168.1.1 is forged anyway,
whether is says "HELO example.com" or not.
Roger