Scott, Here is my case: 1- "Anyone" here means the person who has not real account on my mail server... 2- He connected to the internet using my ISP that means with IP address listed in my SMTP relay for addresses. 3- He opened his Outlook express and configured a new account named "spammer" which is not on my mail server and configured his outgoing mail server as: Mail.MyDomain.Com and start sending from it to my local users.... this is the case Scott in breif..... The account [EMAIL PROTECTED] does not exist on my mail server, however it's able to use my SMTP to send emails to the local users, while I prevented it from sending to outer users... How to prevent such case... why [EMAIL PROTECTED] can send to my local users... It's not a real account.... It cannot authenticated from my server.. then how it works and how it access my local users????? This the problem Scott.. I hope you understand me now.. Many thanx for your time
Regards,, Magdy ----- Original Message ----- From: "R. Scott Perry" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, February 24, 2003 4:20 PM Subject: Re: OSRELAY:Re: [IMail Forum] SMTP Problem (conclussion)! > > >The final Conclusion is: > >1- We can prevent anyone from using my mail server to spam people.. > >2- We cannot prevent anyone from using my mail server to spam my local users > >if he dailed in with my IPs.. > >The first problem solved..... > > > >But the second one still a problem and still that spammer can access your > >local users and send them his mails... > >The question now, is there any wayor method to prevent such spammer from > >using the second case?? > > Can you please clarify *exactly* what you are looking for? In one E-mail, > you seemed surprised that anyone could send E-mail *to* your local users, > but then you said "I did not say that I want to prevent anyone from send to > my local users...". > > Now, you are saying that you want to prevent people from sending mail to > your local users. > > Are you just looking to block spam (note that all spam to your users, just > like all legitimate mail to your users, will go through your > mailserver)? To do that, you have several options: > > [1] Manually, using IMail's filters, Control Access file, and Kill List > (free, but very time consuming), or > [2] Use a spam control product, such as our Declude JunkMail or IMGate. > > The third option, of course, is to prevent people from using your > mailserver to send mail to your local users -- but then they will receive > no mail. > > -Scott > --- > Declude JunkMail: The advanced anti-spam solution for IMail mailservers. > Declude Virus: Catches both viruses and vulnerabilities in E-mail, with no > annual licensing fees. > > --- > [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/
