https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=31281 --- Comment #4 from Katrin Fischer <katrin.fischer@bsz-bw.de> --- I think I've found it. overdue notices uses EnqueueLetter to write the letter to the message_queue: C4::Letters::EnqueueLetter( { letter => $letter, borrowernumber => $borrowernumber, message_transport_type => $effective_mtt, from_address => $admin_email_address, to_address => join(',', @emails_to_use), } Reading the POD for EnqueueLetter this stands out: * reply_address - optional; The reply address for the notice, defaults to patron->library->reply_to So as we are not supplying the address, it would use the reply-to address of the patron's homebranch. -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.