Realizing that the only truly secure way handle mail relays is to do it by IP address
and then use SMTP AUTH, what have people done to fix the problem that seems to be
unfixable with SMTP AUTH (that being that it stops authenticating after a while)? When
ever I set up the server this way I inevitable get calls
from clients screaming at me that they cant send their mail because it keeps asking
for a password of gives them the " not a local host or gateway" error.
Scott Perry wrote:
> >When do I need to setup mail relaying. Is that only for
> >people who are downloading their email to a client, like
> >Outlook Express?
>
> You need to lock down your server (so that it isn't an open relay) now.
> Mail relaying is when people use your server to send their outgoing E-mail. It's a
>good thing if they are your customers, a bad thing if they are not.
>
> If you wait, you will get found by a spammer.
>
> >If I am only forwarding and using webmail can I set the
> >imail settings to "No mail relay"?
>
> If by "forwarding" you mean incoming E-mail is forwarded to an external address,
>that should be fine. The incoming E-mail will be accepted (all incoming E-mail is
>accepted, no matter what your relay settings are). WebMail doesn't (usually) use
>SMTP to send its mail, so it should bypass the relay settings.
>
> >Does this solve the problem of spamming? Can spammers
> >still use it somehow?
>
> If you set IMail to use "No mail relay", spammers shouldn't be able to send mail
>through your server. Just don't be a sucker and fall for the "Relay for local hosts"
>option; that just means that spammers have to pretend to come from your domain in
>order to use your server.
>
> If you want your users to be able to send outgoing E-mail with their own mail
>clients (not using web mail), then you should use "Relay for addresses" and SMTP AUTH
>for people who aren't coming from a trusted IP address.
>
> --
> -Scott
>
> Declude: Anti-virus and Anti-spam solutions for IMail. http://www.declude.com
> --
>
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