Barracuda Networks Spam Firewall smtpd

220 barracuda.ahcof.com ESMTP (976d02f4c7bd60b8c890b8f1deebb207)
250-barracuda.ahcof.com Hello 224.238.215.60 [224.238.215.60], pleased to meet you
250-SIZE 50000000
250-PIPELINING
250-8BITMIME
250 HELP

HTTP/1.1 400 Bad Request
Content-Type: text/html
Date: Thu, 13 Feb 2025 14:10:35 GMT
Connection: close
Content-Length: 39

+OK ahcof.com POP3 ready
+OK Capability list follows

MDaemon Remote Administration

HTTP/1.1 200 OK
X-Frame-Options: sameorigin
X-XSS-Protection: 1
Strict-Transport-Security: max-age=2592000
Content-Security-Policy: img-src * data: blob:;base-uri 'self';worker-src 'self' blob:;manifest-src 'self';frame-src 'self' data:
Referrer-Policy: same-origin
Pragma: No-cache
Expires: -1
Content-type: text/html; charset=utf-8
Content-length: 8893
X-UA-Compatible: IE=Edge

<empty title>

HTTP/1.1 200 OK
Server: BarracudaHTTP 4.0
Content-Type: text/html; charset=utf-8
Content-Length: 13844
Connection: keep-alive
Expires: Sun, 04 Feb 2024 09:35:05 GMT
Date: Mon, 03 Feb 2025 09:35:05 GMT
Cache-Control: private
Cache-Control: max-age=0
Pragma: no-cache
X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block