<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi Ludvik,<br>
<br>
Thank you so much for all this information. It is clearer for me
now.<br>
<br>
Olivier<br>
<br>
<div class="moz-cite-prefix">On 2017-03-15 00:20, Ludvík Schmarcz
wrote:<br>
</div>
<blockquote
cite="mid:752E3DCF-E2E4-4504-8FE1-570FE34D041E@blacksun.cz"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Hi Olivier,
<div class=""><br class="">
</div>
<div class="">question is, if you have one public IP address for
both servers (behind NAT), or every one have own public IP
address. In first case do nothing, only correctly set up postfix
on new server as on old one. In second case you must add second
server as next mail server (MX record) with low priorinty
number. Good practice also is to reduce the expiration MX
records to a small value (600s). In this moment you must turn
off postfix or block postfix ports by firewall on new
server, otherwise new server begin receiving mail before
shutting down the old server. After sync turn off old server,
turn on postfix (unblock) on new server and delete old MX
record.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Ludvik</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
<div class="">
<div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica;
font-size: 12px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto; word-spacing:
0px; -webkit-text-stroke-width: 0px;" class="">
<div style="line-height: normal;" class="">
<div class="">S pozdravem</div>
<div class=""><br class="">
<div apple-content-edited="true" class=""><span
class="Apple-style-span" style="border-collapse:
separate; border-spacing: 0px;">
<div class="" style="word-wrap: break-word;
-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse: separate; orphans: 2;
widows: 2; border-spacing: 0px;">
<div class="" style="word-wrap: break-word;
-webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;"><span
class="Apple-style-span"
style="border-collapse: separate;
border-spacing: 0px;">
<div class="" style="word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;"><span
class="Apple-style-span"
style="border-collapse: separate;
border-spacing: 0px;">
<div class="" style="word-wrap:
break-word; -webkit-nbsp-mode:
space; -webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse: separate;
border-spacing: 0px;">
<div class="" style="word-wrap:
break-word; -webkit-nbsp-mode:
space; -webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse:
separate; border-spacing:
0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode: space;
-webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse:
separate; border-spacing:
0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode:
space;
-webkit-line-break:
after-white-space;">
<div class=""
style="margin: 0px;">
<div class=""
style="margin: 0px;">Ludvík
Schmarcz</div>
<div class=""
style="margin: 0px;">IT
specialista</div>
<div class=""
style="margin: 0px;"><br
class="">
</div>
<div class=""
style="margin: 0px;">tel.:
777 726 780</div>
<br
class="Apple-interchange-newline"
style="font-size:
medium;">
</div>
</div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</div>
</div>
<br class="Apple-interchange-newline" style="line-height:
normal;">
</div>
<span><img moz-do-not-send="true" apple-inline="yes"
id="DD442B4D-38A3-4659-B668-EE35CD762AA0"
apple-width="yes" apple-height="yes"
src="cid:0C09C6EF-C5E3-418B-B7B9-53B51140A406" class=""
height="150" width="150"></span>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';"><br
class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
--</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">---- Black Sun IT Services
s.r.o. ----</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">-- computers - graphics -
solutions --</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">--- networks - internet -
intranet ---</div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing:
normal; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; word-spacing:
0px; -webkit-text-stroke-width: 0px; line-height: normal;
orphans: 2; widows: 2; margin: 0px; font-family: 'Courier
New'; color: rgb(41, 81, 169);"><span class=""
style="color: rgb(0, 0, 0);">------- <a
moz-do-not-send="true" href="http://www.blacksun.cz/"
class="">http://www.blacksun.cz</a> -------</span></div>
<div class="" style="color: rgb(0, 0, 0); font-size: 12px;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;
line-height: normal; orphans: 2; widows: 2; margin: 0px;
font-family: 'Courier New';">--------------------------------------</div>
</div>
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">14. 3. 2017 v 22:38, Olivier Boucard <<a
moz-do-not-send="true"
href="mailto:olivier@pafostech.com" class="">olivier@pafostech.com</a>>:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta content="text/html; charset=utf-8"
http-equiv="Content-Type" class="">
<div bgcolor="#FFFFFF" text="#000000" class=""> Hi
Ludvik,<br class="">
<br class="">
Thanks for the tips.<br class="">
I vaguely remember having some mandatory DNS, and
reverse-DNS, setup to do before installing. Is it not
anymore the case?<br class="">
<br class="">
Olivier<br class="">
<br class="">
<div class="moz-cite-prefix">On 2017-03-14 19:21,
Ludvík Schmarcz wrote:<br class="">
</div>
<blockquote
cite="mid:F685A7A7-AD06-4217-870D-6C9D3DCC8357@blacksun.cz"
type="cite" class="">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8" class="">
Hi Olivier,
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">In my experience, the best new
installation, add users and use imapsync. If the
servers are virtualized, downtime is tens of
seconds (only change IP addresses behind the
firewall after last syncronisation).</div>
<div class=""><br class="">
</div>
<div class="">Ludvik</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
<div class="">
<div style="font-family: Helvetica; font-size:
12px; font-style: normal;
font-variant-ligatures: normal;
font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;" class="">
<div style="line-height: normal;" class="">
<div class="">S pozdravem</div>
<div class=""><br class="">
<div apple-content-edited="true" class=""><span
class="Apple-style-span"
style="border-collapse: separate;
border-spacing: 0px;">
<div class="" style="word-wrap:
break-word; -webkit-nbsp-mode:
space; -webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse: separate;
orphans: 2; widows: 2;
border-spacing: 0px;">
<div class="" style="word-wrap:
break-word; -webkit-nbsp-mode:
space; -webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse:
separate; border-spacing:
0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode: space;
-webkit-line-break:
after-white-space;"><span
class="Apple-style-span"
style="border-collapse:
separate; border-spacing:
0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode:
space;
-webkit-line-break:
after-white-space;"><span
class="Apple-style-span" style="border-collapse: separate;
border-spacing: 0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode:
space;
-webkit-line-break:
after-white-space;"><span
class="Apple-style-span" style="border-collapse: separate;
border-spacing:
0px;">
<div class=""
style="word-wrap:
break-word;
-webkit-nbsp-mode:
space;
-webkit-line-break:
after-white-space;"><span class="Apple-style-span"
style="border-collapse:
separate;
border-spacing:
0px;">
<div class=""
style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break:
after-white-space;">
<div class=""
style="margin:
0px;">
<div class=""
style="margin:
0px;">Ludvík
Schmarcz</div>
<div class=""
style="margin:
0px;">IT
specialista</div>
<div class=""
style="margin:
0px;"><br
class="">
</div>
<div class=""
style="margin:
0px;">tel.:
777 726 780</div>
<br
class="Apple-interchange-newline"
style="font-size: inherit;">
</div>
</div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</div>
</div>
<br class="Apple-interchange-newline"
style="line-height: normal;">
</div>
<span class=""><span
id="cid:0C09C6EF-C5E3-418B-B7B9-53B51140A406"><PastedGraphic-1.tiff></span></span>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';"><br
class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
--</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">----
Black Sun IT Services s.r.o. ----</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">--
computers - graphics - solutions --</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">---
networks - internet - intranet ---</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">--------------------------------------</div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';
color: rgb(41, 81, 169);"><span class=""
style="">------- <a moz-do-not-send="true"
href="http://www.blacksun.cz/" class="">http://www.blacksun.cz</a> -------</span></div>
<div class="" style="font-size: 12px;
font-style: normal; font-variant-ligatures:
normal; font-variant-position: normal;
font-variant-caps: normal;
font-variant-numeric: normal;
font-variant-alternates: normal;
font-variant-east-asian: normal; font-weight:
normal; letter-spacing: normal; text-align:
-webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width:
0px; line-height: normal; orphans: 2; widows:
2; margin: 0px; font-family: 'Courier New';">--------------------------------------</div>
</div>
<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">14. 3. 2017 v 16:37, Olivier
Boucard <<a moz-do-not-send="true"
href="mailto:olivier@pafostech.com"
class="">olivier@pafostech.com</a>>:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="content-type"
content="text/html; charset=utf-8"
class="">
<div bgcolor="#FFFFFF" text="#000000"
class="">
<p class=""><font class=""
face="Helvetica, Arial, sans-serif">Hi,</font></p>
<p class=""><font class=""
face="Helvetica, Arial, sans-serif">I
have an old Kolab 3.3 running on an
old CentOS 6. I would like to migrate
to a new server running CentOS 7 with
the latest Kolab.</font></p>
<p class=""><font class=""
face="Helvetica, Arial, sans-serif">What
would be the steps (not in details
just the overall process) to do such a
migration with no service interruption
(keeping the old server running)?<br
class="">
Especially concerning the DNS
configuration.</font></p>
<p class=""><font class=""
face="Helvetica, Arial, sans-serif">Thanks</font></p>
<p class=""><font class=""
face="Helvetica, Arial, sans-serif">Olivier
Boucard<br class="">
</font></p>
</div>
_______________________________________________<br class="">
users mailing list<br class="">
<a moz-do-not-send="true"
href="mailto:users@lists.kolab.org"
class="">users@lists.kolab.org</a><br
class="">
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://lists.kolab.org/mailman/listinfo/users">https://lists.kolab.org/mailman/listinfo/users</a></div>
</blockquote>
</div>
<br class="">
</div>
</blockquote>
<br class="">
</div>
_______________________________________________<br
class="">
users mailing list<br class="">
<a moz-do-not-send="true"
href="mailto:users@lists.kolab.org" class="">users@lists.kolab.org</a><br
class="">
<a class="moz-txt-link-freetext" href="https://lists.kolab.org/mailman/listinfo/users">https://lists.kolab.org/mailman/listinfo/users</a></div>
</blockquote>
</div>
<br class="">
</div>
</div>
</blockquote>
<br>
</body>
</html>