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[SOLVED] Image turn into blank gif 1x1 px

Posted: 30 Jan 2020 17:39
by brunok
Hi!

I encountered a problem with receiving responsive mail marketing.
Some images load and disappear quickly, becoming the blank 1x1 px gif.


Has anyone had this problem?


My MTA is a ZIMBRA, behind EFA.


EDIT1: Found in source message: "WEB BUG FROM".

This is issue!
How to bypass domain from WEB BUG (without allow ALL)?



EDIT2: Created a rule from file that allow some domains and disarm the rest.