This article describes how to troubleshoot the error 'Timeout During Client Greeting' in the FortiMail log.
Scope
FortiMail.
Solution
When the error below is in the cross-search log in FortiMail, try the suggestion below. Timeout waiting for input from <sender SMTP server> during client greeting.
Consider using the following CLI command to increase the value of the user greeting of FortiMail:
config system mailserver set timeout-connect <integer> <----- In seconds – Maximum is 120 seconds. [timeout value, in seconds, for smtp connect] set timeout-greeting <integer> <----– In seconds – Maximum is 360 seconds. [timeout value, in seconds, for initial smtp greetings] end
timeout-connect specifies the maximum time to wait for the receiving SMTP server to establish a network connection. timeout-greeting specifies the maximum time to wait for an SMTP server to send the SMTP reply code 220.
The valid range for timeout-connect is 10 to 120 and the default is 30 seconds.
The valid range for timeout-greeting is 10 to 360 and the default is 30 seconds.
Verify the result and see whether the issue is resolved or not.
