Fellow techies,
I have a weird problem. We’ve started receiving a lot of spam messages to our distribution lists.
I have created a test DL and enabled the “from authenticated users only” and tested it from external email sources. It worked a treat.
I was asked then to enable this feature on all our DLs. However, it suddenly stopped working. I mean, all distribution lists have “from authenticated users only” selected, but external emails are getting through now. I run the same tests on the test DL and mails are getting through.
I’ve not made any changes to our Exchange Organisation.
The only difference is that I enabled the feature by setting the msExchRequireAuthToSendTo attribute to TRUE.
Has anyone got any idea why emails are been allowed to groups / users even though they should receive mails only from authenticated users?
We use Exchange 2003 SP2
Any help much appreciated.
Michael.
I have a weird problem. We’ve started receiving a lot of spam messages to our distribution lists.
I have created a test DL and enabled the “from authenticated users only” and tested it from external email sources. It worked a treat.
I was asked then to enable this feature on all our DLs. However, it suddenly stopped working. I mean, all distribution lists have “from authenticated users only” selected, but external emails are getting through now. I run the same tests on the test DL and mails are getting through.
I’ve not made any changes to our Exchange Organisation.
The only difference is that I enabled the feature by setting the msExchRequireAuthToSendTo attribute to TRUE.
Has anyone got any idea why emails are been allowed to groups / users even though they should receive mails only from authenticated users?
We use Exchange 2003 SP2
Any help much appreciated.
Michael.
