Mails quarantined multiple times in email Security and data protect

Question

Hello all, 
 I am currently starting to use Sophos Central Mail. First tests with the end-user quarantine have shown that released mails sometimes end up in the quarantine again after being released by another policy. 
 Here is the process I am observing: 
 1. mail (with unscannable attachment) comes in and is scanned 2. email security module quarantines mail because attachment can't be scanned 3. user gets quarantine summary 4. user releases the mail 
 up to here everything as I expect it but then: 
 5. data protection module detects the released mail as unscannable and moves it back to quarantine 
 Maybe I missed the point or it is intentional but my wish is that a deliberately released mail cannot be quarantined by another scan. 
 Maybe someone can help me. 
 Many greetings Stephan

Vivek Jagad · Answer

Hello prifesport , Thank you for reaching out to the community, This is a known behavior in some cases. The issue XGE-19926 seems to be related. In addition, we would need to confirm what was the reason for quarantine in the first place, as well as what was the reason in the second place. There may be two reasons for quarantining it again after releasing. According to the known issue, the first cause is BULK and the second one is DLP, so what was the reason you noticed?