On POP3/IMAP incoming email when receiving an e-mail that contains an attachment, you customer will received this alert message on returned email.
550-zip file contains an attachment with a dangerous payload.
A lot of viruses and malware is sent in emails with zip attachments. Sometimes our antivirus won't catch nasty email. This is a big problem when you receiving tons of this kind of messages. We found receiving tons of nasty emails containing zip attachments with viruses in it To protect the account safe of subscribed users, good way to solve this is by simply reject emails with zip attachments.
Solution:
User can use Cloud drive and send the file download link to recipient then solve the zipped file blocking issue.
- Dropbox
- Go to Dropbox.com
- https://help.dropbox.com/zh-tw/share/force-download
- Baidu Drive
- Go to Baidu Pan
- https://eyun.baidu.com/content/75181/
