[Dan Busarow]

On Fri, 21 May 1999, Dominic Martinelli wrote:

...

However, I ran into one major problem.

I am in the process of trying to migrate a complicated sendmail alias scheme to mailman. Currently we have a hierarchy of aliases. For example, a top level alias will point to lower level ones.

The problem that I have is that when I nest lists with mailman, if someone is on more than one of the bottom level lists, they will get duplicate messages. Is there anyway for mailman not to send out duplicates in this case?

Also, it is not possible to not have people on more than one of the lower level lists, so making sure that there are not duplicates is not an option.

Try lowering MAX_SPAWNS (1 should almost certainly work) and/or raising SMTP_MAX_RCPTS

You need to let sendmail see the duplicates and sort it out.

This won't help, if I understand the problem correctly.

If all your "leaf" alias entries point to separate Mailman lists, sendmail will consider each Mailman list a separate destination. Now, if the intersection of the member sets of two Mailman lists aren't always empty, Mailman would have to have some sort of inter-list internal communication to avoid the addresses inside the intersections getting duplicate mail.

Currently there are no inter-list communication inside Mailman. There have been some talk of adding support for this for post-1.0 (but I can't remember whether any of the ideas presented was generally agreed upon to be truly good ones).

Harald