Lua

Verify Connectivity to the POP3 Server

Demonstrates the Chilkat MailMan.VerifyPopConnection method, which tests whether a TCP/IP connection can be established with the configured POP3 server. It verifies connectivity only — it does not authenticate. This example configures the POP3 host and checks whether it can be reached.

Background: This is the POP3 counterpart to VerifySmtpConnection. It answers the first diagnostic question — can the client reach the POP3 server on the configured host and port and complete the TLS handshake? A failure here indicates a network, firewall, DNS, port, or certificate problem rather than a credentials issue, which VerifyPopLogin checks next.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the MailMan.VerifyPopConnection method, which tests whether a TCP/IP
-- connection can be established with the configured POP3 server.  It verifies connectivity
-- only (it does not authenticate).

local mailman = chilkat.MailMan.new()

-- Configure the POP3 server connection.
mailman.mail_host = "pop.example.com"
mailman.mail_port = 995
mailman.pop_ssl = true

-- Test connectivity to the POP3 server.
local connected = mailman:verify_pop_connection()

if connected then
    print("Successfully connected to the POP3 server.")
else
    print("Could not connect to the POP3 server.")
end