>>2. what is the reason you have set Change30x to "1" ?

I'll answer this one first.  My understanding on the Change30x option was that it would catch any Location: headers that have incorrect protocol and 'fix' them.  e.g. if the Domino web server sends back Location: http://pound-server/mail.db.nsf, Pound would see this and reformat to https://[...]  If this is not correct, please explain.  I have tried with both 0 and 1 and the result is the same

>>1. can you post the HTML source of this form ?

Here it is.  This form is a slightly modified IBM login form (changes being cosmetic).  Not sure how helpful this will be:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv='expires' content='0'><link rel=stylesheet type='text/css' href='/domcfg.nsf/cssLogin?ReadForm'>
<script language="JavaScript" type="text/javascript">
<!--
var NN4 = (document.layers) ? true : false;

// required for NN4 to reliably capture key events
if (NN4) document.captureEvents(Event.KEYPRESS)
document.onkeypress = function (event) {

}

function setFormFocus() {
document.forms[0].Username.focus();
document.forms[0].Username.select();
}

//submit the form if the user presses the ENTER key
function checkEnter(event)
{
var code = 0

if (NN4) {
code = event.which
} else {
code = window.event.keyCode
}

if (code==13)
document.forms[0].submit()
}
// -->
</script>
</head>
<body text="#000000" bgcolor="#FFFFC2" onload="setFormFocus();">

<form method="post" action="/names.nsf?Login" name="_CS_Default_CustomLoginForm">
<input type="hidden" name="%%ModDate" value="297843C02D6C4118"><img src="/domcfg.nsf/univ_i_header_lft.gif/?OpenImageResource" width="163" height="40" alt="">
<br>
<div align="center">
<table border="0" cellspacing="0" cellpadding="0">
<tr valign="top"><td width="299" bgcolor="#E1E1E1" colspan="3"><div align="center"><br></div></td></tr>

<tr valign="top"><td width="12" bgcolor="#E1E1E1"><img src="/icons/ecblank.gif" border="0" height="1" width="1" alt=""></td><td width="95" bgcolor="#E1E1E1"><b><font size="2">Username</font></b></td><td width="192" bgcolor="#E1E1E1"><font size="2" face="Courier New">
<input name="Username" value="" size=20 maxlength=50 autocomplete=off></font></td></tr>

<tr valign="top"><td width="12" bgcolor="#E1E1E1"><img src="/icons/ecblank.gif" border="0" height="1" width="1" alt=""></td><td width="95" bgcolor="#E1E1E1"><b><font size="2">Password</font></b></td><td width="192" bgcolor="#E1E1E1"><font size="2" face="Courier New">
<input name="Password" value="" type="password" size=20 maxlength=50 autocomplete=off></font></td></tr>

<tr valign="top"><td width="12" bgcolor="#E1E1E1"><img src="/icons/ecblank.gif" border="0" height="1" width="1" alt=""></td><td width="95" bgcolor="#E1E1E1"><img src="/icons/ecblank.gif" border="0" height="1" width="1" alt=""></td><td width="192" bgcolor="#E1E1E1"><br>
<br>

<input type="submit" value="Login"></td></tr>

<tr valign="top"><td width="299" bgcolor="#E1E1E1" colspan="3"><br></td></tr>
</table>
</div><div align="center"><font size="2">
<input name="RedirectTo" value="/mail/btest.nsf" type=hidden></font><br>
</div></form>
</body>
</html>

--jeff