Hi, I have tried to configure postfix for external smtp use (for just one external server) and it seems it's ok, telnet is ok, nmap shows that the 25 and 587 ports are listening, etc.. But when I try to run a php script that will authenticate to this postfix server and send e-mail through it the connection times out:
Connection could not be established with host cloud10.macweb.com.br [Connection timed out #110]
There's no iptables rule to restrict it the external server IP is on mynetworks list on postfix config, what more to check?
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