Re: SMTP behind NAT

[Laurens Vets <laurens () daemon be>]

Hey Georg,

> I'm currently in a nat environment, where outbound connections to smtp and 
> smtps are blocked by a firewall. You are therefore forced (unless using vpn or 
> something alike) to send mail via a local smtp server. I was wondering whether 
> there is any sense in blocking these connections.
> What does the administrator gain by forcing everybody to a local open smtp 
> server? Can you avoid being put on some kind of blacklist by these means?

It's a measure to block unauthorized internal mailservers (think 
virus/trojan/bot infected internal machines) to send mails (think viru 
mails/spam :p) without going through the company authorized mailservers 
(who usually have av/antispam measures on it)

> I would very much appreciate an answer. Thanks in advance.

No problem :)

Laurens

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