Scott, > That's because you are an open relay. > You *MUST* use "Relay for Addresses" or "No Mail Relay". If you don't use > those, we can't help you; spammers WILL use your server to send their mail.
- Since first time we installed Imail we run "Relay mail for addresses" and I still using such setting on my mail server.... I am just trying to find out a way to fix the Issue... > Again, anyone in the world can send to your local users (think about it -- > if they couldn't, your users wouldn't get any mail). - I did not say that I want to prevent anyone from send to my local users... But my case is: any can dail to my system using username and password OR using our free internet feature, then open his outlook express, create a non-exist Email account then configure it to use out SMTP to send emails So he will be able to use My mail server without real mail account.... This is the case.. Why Imail server cannot prevent non-existing username from using it for sending outgoing mails to anyone if that usename does not exist in Imail DB??? meaning: Imail should check if that sender already exist in its DB , then it will allow him to send emails. Else: prevent the sending process... I hope that will explain what I am asking for Thanx for your time Magdy ----- Original Message ----- From: "R. Scott Perry" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, February 23, 2003 5:55 PM Subject: Re: OSRELAY:Re: [IMail Forum] SMTP Problem (1)! > > >But I still have the problem... > >the test@ user which really does not exist on the realy worl still able to > >send emails to any one on the internet... > > That's because you are an open relay. > > You *MUST* use "Relay for Addresses" or "No Mail Relay". If you don't use > those, we can't help you; spammers WILL use your server to send their mail. > > >that means anyone can use any collecting letters and use my Imail server to > >send emails to the internet and to my local users... which is big problem... > > Again, anyone in the world can send to your local users (think about it -- > if they couldn't, your users wouldn't get any mail). > > Anonymous people on the Internet can only send *outgoing* E-mail from your > IMail server *if* you are an open relay. > > >I have many users access their mail through the dialup from many ISPs differ > >than mine, so I cannot use the Relay for addresses only..... > > If you cannot use "Relay for Addresses", you must either [1] Use "No Mail > Relay" (everyone has to authenticate), or [2] Be an open relay, and give > spammers free mail service. > > Note that if you can't use "Relay for Addresses", you can't use "No Mail > Relay" either, since "Relay for Addresses" is exactly the same as "No Mail > Relay", except that it also allows people from certain IPs to send outgoing > mail. > > So really you are saying "I must be an open relay". If that is the case, > you will offer free mail service to spammers, and you will get in more spam > databases (so less of your legitimate outgoing mail will get delivered). > > >Even I used it the test user sill able to access any user arround the > >world... > > That will happen if you are an open relay. If you are an open relay, > anyone in the world can send mail through your server. But you just said > that you cannot close the relay, so you are stuck with spammers using your > server, until you use either "Relay for Addresses" or "No Mail Relay". > > -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/
