Hi, I currently use a Mailman and Exim4 setup on Debian with Exim running the DKIM signing for outgoing mails. I have VERP set on in some lists, and on the lists doing VERP I am getting a very slow delivery time (around 10 minutes for 800 subscribers). If I don't use VERP the delivery time increases.
On the Mailman-users list someone suggested Postfix may be a better bet for this type of delivery, I have been looking into this over the past few days and I can get the initial Postfix set up on a test VM, but want to know the best way of doing DKIM in Postfix? Any suggestions greatfully received. Thanks. Andrew.
