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Author Topic: IPv6 and 25 port  (Read 6869 times)


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IPv6 and 25 port
« on: March 15, 2013, 07:18:15 PM »

used FreeBSD 9.1, Windows 7
Try send email via IPv6 to google via own email server. Can't connect to MX's.

Checking it
telnet -6 2a00:1450:4001:c02::1b 25
Trying 2a00:1450:4001:c02::1b...

Ping ok, Traceroute Ok

Check it:

Checked port 25 on Host/IP 2a00:1450:4001:c02::1b...
 The checked port (25, service smtp) is online/reachable!
Completed portscan in 0.0092 seconds

Checking IMAP -ok.
telnet -6 995
Trying 2a00:1450:4013:c01::6c...
Connected to
Escape character is '^]'.

Try check himself, all tested ports opened, only 25 is closed.

How diagnose where is problem.

FreeBSD a just clear installed from ISO at VMWare.
No Firewall.

Can say other HOSTs with work IPv6 25 port for test?


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