220 applyomajorityless.net ESMTP service ready
250-applyomajorityless.net says hello
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
250-8BITMIME
250-AUTH CRAM-MD5
250-AUTH=CRAM-MD5
250-XACK
250-SIZE 0
250-VERP
250-SMTPUTF8
250 DSN

Apache httpd

HTTP/1.1 200 OK
Date: Sat, 14 Sep 2024 23:00:22 GMT
Server: Apache
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

Squid http proxy4.15

HTTP/1.1 400 Bad Request
Server: squid/4.15
Mime-Version: 1.0
Date: Sun, 01 Sep 2024 08:19:41 GMT
Content-Type: text/html;charset=utf-8
Content-Length: 3482
X-Squid-Error: ERR_INVALID_URL 0
Vary: Accept-Language
Content-Language: en
Connection: close