[Mailman-Users] ListProc to Mailman migration -- any tools or guides?

Chris Nulk cnulk at scu.edu
Mon Mar 2 19:09:57 CET 2015

A few years ago, we switched from ListProc to Mailman.  We didn't have 
as extensive a set of lists as do you however.

Remember that communications with the list owners is extremely important.

What we did was:
0. Have a firm timeframe to complete the change over.
1. Try to weed out as many lists as you can that may not be used anymore.
2. Set up Mailman in parallel with ListProc.
3. Create new lists in Mailman to replace the lists in ListProc (we 
changed our naming convention so there wasn't a 1 to 1 move).  If your 
lists are going to be named the same, simple create a list in Mailman 
for each list to be moved from ListProc.
4. List owners of the Mailman lists should be the same as ListProc lists.
5. Communicate with the list owners of the ListProc lists and let them 
know how to access and configure the list on Mailman.
6. Give list owners time to make their changes (e.g. add moderators, set 
moderation, etc.) and test the list.
7. After list owner testing, populate the list (or have the list owner 
do it) membership.
8. Communicate with the list owners for a cutover time (either 
individually or all at once) to do any file conversions like archives, etc.
9. Monitor the process carefully.
10. Remember that firm timeframe, well some list owners are still going 
to miss it.  Be prepared.

Overall, the process went very smoothly for us.  We did not convert the 
archives.  We did change how we populated several of our lists though 
which was a bit of a challange (we went from populating via a static 
mechanism once per year to dynamic LDAP populating).


On 3/2/2015 7:24 AM, Bill.Costa at unh.edu wrote:
> I'm going to be migrating about 400 lists with 25K subscribers
> from ListProc to Mailman.  I'm looking for whatever tools I can
> find to aid in the conversion process.  Of particular concern is
> the creation of the replacement list in Mailman with a reasonable
> mapping of the ListProc settings into equivalent Mailman
> features, and of course the conversion of the subscribers.
> Archive conversion would be nice too, but is a much lower
> priority.
> In my searching so far I've found a few bits and pieces, but
> nothing comprehensive.  So before I get out the hammer and saw, I
> just want to make sure I'm not missing a good resource for doing
> this.
> ...BC

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