On 12 Apr 2021, at 13:15, natan <na...@epf.pl> wrote: > But user (on web panel) can create yourself that's aliases group
Then that is the source of your problem. Though I am not sure what the issue is with sending mail to a group of 200 people, assuming you are limiting the group to only aliases within their domain. a...@example.com that is aliases to all the accounts on example.com seems like it's OK, but I may be out of date here as the last time I did anything like that was in around 1997. -- I started playing Myst at 4:30 in the afternoon and looked up suddenly and realized it was February.