Hi, my name is Johan and I am new to Notes/Domino.Our customer has a strange problem with their distribution lists that I can not find any answer to elsewhere.
They use a list with some 100 users, both external and internal email addresses.
When they send an email to all users in this list, the external mails does not go through. They receive a message after a while saying Delivery time expired. If they send to each one individually, it works just fine. Please note this only affects external recipients outside the network.