421 Too many concurrent SMTP connections from this IP address; please try again later.\r\n

Apache httpd

HTTP/1.1 200 OK
Date: Sat, 29 Mar 2025 16:21:47 GMT
Server: Apache
Upgrade: h2,h2c
Connection: Upgrade
Last-Modified: Tue, 17 Feb 2015 20:54:56 GMT
ETag: "6406fb-7ab-50f4eea47e800"
Accept-Ranges: bytes
Content-Length: 1963
Vary: Accept-Encoding,User-Agent
Content-Type: text/html

HTTP/1.1 301 Moved
Content-length: 139
Location: https://p3plmcpnl494471.prod.phx3.secureserver.net:2096
Content-type: text/html; charset="utf-8"
Cache-Control: no-cache, no-store, must-revalidate, private
Pragma: no-cache