Thanks, I was effectively concerned about that specific point of return address! So another set of questions is coming:
1.- to be able to relay mail from ASP forms, do I just have to add my IPs in the ADDRESSES list of the option "RELAY MAIL FOR"? By doing so I effectively do not need anymore to be concerned about the FROM address in these forms... Because they are coming from trusted IP addresses, they will be relayed, isn't it? 2.- Because all users must authentify themselves all their outgoing mails will be relayed? Thankds again, Laurent. ----- Original Message ----- From: "R. Scott Perry" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, September 19, 2004 8:50 PM Subject: Re: [IMail Forum] A security question > > >I'm new in Ipswitch... A simple question: > > > >I set my server SMTP security option on "RELAY FOR LOCAL USERS ONLY"... It > >works, > >but I want to have the confirmation that it is a secured enough > >configuration. > > Good question. :) The answer is "no" (any spammer can relay mail if they > set the return address to a domain of yours). > > IMail's SMTP Security options have a number of relaying choices. Of them, > only 2 can be used safely (the rest cause you to be an open relay). The > two safe options are "Relay for Addresses" and "No Mail Relay". > > If you use IMail's "Relay for addresses", you would enter a list of "safe" > IP addresses that your users may come from; anyone not coming from those > safe IPs would need to use SMTP AUTH. If you use "No mail relay", everyone > must use SMTP AUTH to relay mail. Note that relay settings apply only to > outgoing E-mail, so no matter what your settings are, your users will still > be able to get mail. > > So to reiterate: "Relay for Addresses" or "No Mail Relay" are safe; > everything else will get you listed in a number of spam databases. > -Scott > > --- > [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
