> The main thing you need to be aware of is if you run this > type of program on your mail server, it could appear to > come from 127.0.0.1 which will bypass any SMTP AUTH requirements.
> -Jerod
I found another utility that's completely free. Port Mapper v1.40 from http://www.kmint21.com/free/.
As Jerod pointed out you need to make sure you don't bypass any SMTP AUTH requirements.
ie, exclude 127/8 from trusted networks. Don't know whether that would break anything.
Best practice for port 587 is that all msg submissions require SMTP AUTH (ie, no domains are local to the MTA, all domains are effectively relay domains. In Imail terms, "no mail relay"). In that case, spammers can't hit your local domains via 587 (because they can't AUTH), and you wouldn't need any anti-spam on port 587.
Len
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