[CentOS] Per-user limits for port access

Thu Aug 21 11:32:25 UTC 2008
Jussi Hirvi <greenspot at greenspot.fi>

Centos 5.x again...

Is there a way to limit port access on a per-user basis? My practical goal
is to limit, who is allowed to use SMTP AUTH in Sendmail. Any possible
solutions appreciated...

Obviously, limiting by ip will not work, since the very purpose of SMTP AUTH
is to enable mail relaying for trusted users from *anywhere*.

- Jussi

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Jussi Hirvi * Green Spot
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jussi.hirvi at greenspot.fi * http://www.greenspot.fi