Gatekeeper for Linux is an Open relay
As far as I see this topic was already discussed here:
I will appreciete an additional info om this matter.
The SMTP proxy of my Getekeeper for Linux is functioning as an open relay and I have no clue ho to disable it.
Besides check with mxtoolbox.com I verified it manually as well:
[[email protected] ~]# telnet mail.mydomain.si 25
Connected to mail.mydomain.si.
Escape character is '^]'.
220 fsecure.inles.si F-Secure/fsigk_smtp/530/fsecure.mydomain.si
mail from: [email protected]
250 2.1.0 Ok
rcpt to: [email protected]
250 2.1.5 Ok
354 Enter mail (F-Secure/fsigk_smtp/530/fsecure.mydomain.si)
testing mail 03
250 2.0.0 Ok: queued as 98F28762F5
I attampted to block it with a custom filter rules, but with no luck.
Also I read on a forum that there suppose to be an option called "Restrict LAN access" in the smtp proxy settings. I'm unable to locate this option in my Gatekeeper web panel.
I'm using CentOS 6.6 and F-secure 5.
Thanks in advance for the responce.