An addendum to Adminblast tip
First of all, hat tip to Cristian D’Aloisio for correcting this tip. I’m sorry for leaving out some detail guys. Won’t happen again.
Tip #21
RouterMaxEffectiveSize=N
n=total size of message to prevent a user sending a 1mb email to 1000 people. This uses n as the total calculated size of the email and will NDR if it exceeds the value.
What I forgot to point out is that if you want to include attachments in the calculation, you need to also include
RouterMaxEffectiveSizeIncAttach=1
..in the server notes.ini file.

Deborah Walmer-Basembe Said,
January 23, 2012 @ 9:02 pm
Thank you! Will be using this.
Gregg Eldred Said,
January 24, 2012 @ 1:41 pm
Paul:
I hate to ask:
Should these values be ROUTERMAXEFFECTIVESIZE and ROUTERMAXEFFECTIVESIZEINCATTACH ? A slight typographical error?
Just wondering.
As always, a splendid session.
pmooneynet Said,
January 24, 2012 @ 1:44 pm
@Gregg – nope, you are correct. Altered the post and changed to ProperCase to make it easier to read.
Piotr Said,
January 26, 2012 @ 8:28 am
This is great Paul!
One open question – in case Customer/User would actually manage to create mass-mailing above thresholds set by above ini “N” parameters – how Router would handle this mailing – will there be NDR delivered or other specific behavior?