220 avis hosting Server
530 Login incorrect.
214-The following commands are recognized (* =>'s unimplemented):
 CWD     XCWD    CDUP    XCUP    SMNT*   QUIT    PORT    PASV    
 EPRT    EPSV    ALLO*   RNFR    RNTO    DELE    MDTM    RMD     
 XRMD    MKD     XMKD    PWD     XPWD    SIZE    SYST    HELP    
 NOOP    FEAT    OPTS    AUTH*   CCC*    CONF*   ENC*    MIC*    
 PBSZ*   PROT*   TYPE    STRU    MODE    RETR    STOR    STOU    
 APPE    REST    ABOR    USER    PASS    ACCT*   REIN*   LIST    
 NLST    STAT    SITE    MLSD    MLST    
214 Direct comments to root@eco1504.ht.avis.ne.jp
211-Features:
 MDTM
 MFMT
 TVFS
 MFF modify;UNIX.group;UNIX.mode;
 MLST modify*;perm*;size*;type*;unique*;UNIX.group*;UNIX.mode*;UNIX.owner*;
 REST STREAM
 SIZE
211 End

Postfix smtpd

220 eco1504.ht.avis.ne.jp ESMTP Postfix
250-eco1504.ht.avis.ne.jp
250-PIPELINING
250-SIZE 20971520
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

Apache httpd

HTTP/1.1 403 Forbidden
Date: Wed, 15 Jan 2025 09:35:07 GMT
Server: Apache
Content-Length: 202
Content-Type: text/html; charset=iso-8859-1

+OK Hello there.
+OK Here's what I can do:
STLS
TOP
USER
LOGIN-DELAY 10
PIPELINING
UIDL
IMPLEMENTATION Courier Mail Server
.