In this recipe, we will discuss the use of Wireshark to analyze failures in email protocols.
Analyzing POP, IMAP, and SMTP problems
Getting ready
When the failure is reported by a specific user while all other users are working fine, capture the packet as close as possible to the affected user. If the failure is reported for multiple users, capture the packet as close as possible to the server.
How to do it...
Depending on the direction of the failure, we may need to identify what email protocol we should be troubleshooting.
For example, if the user complains about a...