each group in this BU has their own email - support@ourdomain.com and accounts@ourdomain.com

emails sent to support@ are correctly allocated to the support group with the BU, however emails sent to the accounts@ address are also allocated to the support group, instead of the accounts group.

can someone please advise why this is and how to resolve, the accounts group has the incoming mail address of accounts@ourdomain.com ans this is shown correctly under Business Unit Settings, Mail Configuration, Email Address for Group