...rather than specify a customised EHLO response.
# Server-side
<reply>
<servercmd>
-REPLY EHLO 250 AUTH PLAIN
+AUTH PLAIN
REPLY AUTH 334 PLAIN supported
REPLY dGVzdAB0ZXN0ADEyMzQ= 235 Authenticated\r
</servercmd>
# Server-side
<reply>
<servercmd>
-REPLY EHLO 250 AUTH LOGIN
+AUTH LOGIN
REPLY AUTH 334 LOGIN supported\r
REPLY dGVzdA== 334 UGFzc3dvcmQ6
REPLY MTIzNA== 235 Authenticated
# Server-side
<reply>
<servercmd>
-REPLY EHLO 250 AUTH CRAM-MD5
+AUTH CRAM-MD5
REPLY AUTH 334 PDE4OTYuNjk3MTcwOTUyQHBvc3RvZmZpY2UucmVzdG9uLm1jaS5uZXQ+
REPLY dGltIGI5MTNhNjAyYzdlZGE3YTQ5NWI0ZTZlNzMzNGQzODkw 235 Authenticated
</servercmd>
# Server-side
<reply>
<servercmd>
-REPLY EHLO 250 AUTH PLAIN
+AUTH PLAIN
REPLY AUTH 235 Authenticated
</servercmd>
</reply>
# Server-side
<reply>
<servercmd>
-REPLY EHLO 250 AUTH LOGIN
+AUTH LOGIN
REPLY AUTH 334 UGFzc3dvcmQ6
REPLY MTIzNA== 235 Authenticated
</servercmd>