BugZero found this defect 4279 days ago.
Data sources
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6/27/2016
Firebox M200
Firebox M300
Firebox M270
Firebox M370
Firebox M470
Firebox M570
Firebox M670
Firebox M290
Firebox M390
Firebox M400
Firebox M500
Firebox M440
All
Fireware
11.x
11.10.x
11.10
11.10.1
11.10.2
11.10.3
11.10.4
11.10.5
11.10.6
11.10.7
All
The pop-up window for "email reading confirmation" isn't showing up due to Proxy Header entry being incorrect as it is case sensitive.
Open the according SMTP/POP3 Proxy Action rule and go to Headers. Press "Change View" to change to the "advanced view" Edit rule "return-receipt-to:*" Change Entry Pattern Match "return-receipt-to:*" to "Return-Receipt-To:*" Commit changes with "OK" and save the configuration to your firebox.