In certain circumstances, the error message can
occur when attempting to send or receive mail via F-Secure Internet Gatekeeper
for Linux (FSIGK).
SMTP transfer denied is a common issue mainly because e-mail recipient
domains are restricted on the server concerned. For the most part, this is a
consequence of the huge quantities of spam flooding e-mail networks.
Note: This article assumes deep technical understanding of F-Secure's
products, network protocols and the relevant operating system. If you are
unsure, contact F-Secure support for assistance.
To ensure e-mail delivery, do as follows:
If you receive e-mail messages from the Internet to specific
domains, on the SMTP proxy page, specify the domains in
Restrict e-mail recipients.
If you send e-mail messages from internal machines and transfer
from specific clients is needed, specify the connecting client as
Hosts and networks within LAN and enable the
LAN access settings section.
Note: If connecting addresses are translated by NAT, the address
connecting to FSIGK must be specified. The connecting address can be seen in
the access.log file.
If connection from all hosts in the 192.168.x.x subnet should be
allowed, do as follows:
settings > on.
Hosts and Networks should