Troubleshooting Email Issues: Difference between revisions

Revision as of 18:22, 10 August 2021

Zip files are a very common way to spread ransomware and other nasty payloads that can compromise your data
For this reason, zip files are a blocked attachment type, the server will not accept them by default
- The server also blocks other kinds of file types that can be run as programs, such as .exe and .bat files

Computerisms can disable the block on zip attachments
- Disabling the block affects the whole domain, so we cannot prevent individual users @yourdomain.com from receiving zip files without blocking them for everybody.
  - This puts the onus on the end-users to not open zip files that they do not recognize.
  - Because of the dangers of ransomware crippling your entire network, we do not recommend opening any zip file attachment without first contacting the sender and confirming it is a legitimate file
The Sender can rename the attachment from file.zip to file.zi_ before sending
- Most of the time, this will fool the server into letting the mail through
- When the mail is received, the recipient will have to save the file, and then rename it from file.zi_ back to file.zip

@@ Line 6: / Line 6: @@
 ===The Solution===
 *Computerisms can disable the block on zip attachments
-**Disabling the block affects the whole domain, so we cannot block individual users @yourdomain.com
+**Disabling the block affects the whole domain, so we cannot prevent individual users @yourdomain.com from receiving zip files without blocking them for everybody.
 ***This puts the onus on the end-users to not open zip files that they do not recognize.
 ***Because of the dangers of ransomware crippling your entire network, we do not recommend opening any zip file attachment without first contacting the sender and confirming it is a legitimate file