Adobe campaign delivery taking long
Our Adobe campaign classic installation is an on-premise. Whenever an email delivery is sent out with population more than 10k, the email delivery get speread across few days (there is no multi-wave setup). We have checked the send log history - if the send start at 9:01 am, then first few hundred email goes out and then few fails (due to soft/hard bounce) and then no email gets delivered for 1 hour. And it resumes sending again after an hour (10:01 am) and the same thing. As a result, the 10k gets speread across multiple days and delivered across different time. Some may be even in the middle of the night - which is already a problem for the customer. We did not find any issue with the MTA/MTA child (there is no error log/restart during those hours)! Any idea what we can check/ doing wrong