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Hi Ludvik,<br>
<br>
Thanks for the tips.<br>
I vaguely remember having some mandatory DNS, and reverse-DNS, setup
to do before installing. Is it not anymore the case?<br>
<br>
Olivier<br>
<br>
<div class="moz-cite-prefix">On 2017-03-14 19:21, Ludvík Schmarcz
wrote:<br>
</div>
<blockquote
cite="mid:F685A7A7-AD06-4217-870D-6C9D3DCC8357@blacksun.cz"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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="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="10C7FF58-AA5C-4DFA-93A7-55A261FE2627"
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 16:37, Olivier Boucard <<a
moz-do-not-send="true"
href="mailto:olivier@pafostech.com" class="">olivier@pafostech.com</a>>:</div>
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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>
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