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List: kolab-users
Subject: Re: Steps to follow when server is moved under new IP
From: protik <protik.seeker () gmail ! com>
Date: 2015-12-16 17:10:35
Message-ID: CAN3chOV+fg8VpHRJ52VKKBqP9DpV5Bsp=yx9+6J98unQhMUWhg () mail ! gmail ! com
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Just used telnet and ipmango services to check the port, it seems to be
working.
I'm actually thinking of making a new instance of kolab since I'm using 3.1
and newer is 3.4 I guess.
On Wednesday, December 16, 2015, Sruli Saurymper <sruli@saurymper.com>
wrote:
> Never heard ISP's blocking incoming traffic to port 25, and they CAN block
> 1 direction. to test it you can temporarily change postfix outbound port to
> something else.
>
> On 16/12/15 07:39, protik wrote:
>
>> Actually new ISP had port 25 blocked, so I called and requested block to
>> be removed.
>> I can receive emails fine, so I called again to see if they are blocking
>> outgoing but they replied if port 25 is open then its open both ways (maybe
>> I should somehow check if outgoing port is open)
>>
>> As for reverse DNS then yes my domain registrar takes care of it (but
>> I'll check again).
>>
>> I'm confused about SSL certificate, because I don't think I use SSL
>> certificate (or at least I use self signed certificate), I'll read up more
>> about this
>>
>> Thanks for your help
>>
>>
>> On Tue, Dec 15, 2015 at 11:21 PM, Sruli Saurymper <sruli@saurymper.com
>> <mailto:sruli@saurymper.com>> wrote:
>>
>> SPF and reverse DNS are not a must to get outgoing to work but
>> many (maybe most?) will not accept emails from servers who do not
>> have these configured. SPF record you setup in your DNS records
>> reverse DNS you have to request from your ISP.
>> I don't know what to make of your current error, doesn't sound
>> like its linked to SFP/DNS issue, is your SSL certificate IP or
>> domain bound? now-days only domain bound certs are issued, does
>> your ISP allow sending mail on port 25?
>> I cant help you much further on this, I am sure if you find more
>> info in your log file and post someone will be able to help you.
>>
>>
>> On 16/12/15 07:07, protik wrote:
>>
>> I have only setup kolab through wiki instructions. Mail server
>> was running for last 3 years.
>> Week back I switched ISP, I didn't change the setup.
>>
>> I think SPF and reverse records are updated through dyndns (I
>> may not be correct though, let me know how to look for
>> SPF/reverse record)
>>
>> After looking through /var/log/maillog
>>
>> I've error like:
>>
>> smtp[3002]: certificate verification failed
>>
>> Regards
>>
>> On Tue, Dec 15, 2015 at 10:29 PM, Sruli Saurymper
>> <sruli@saurymper.com <mailto:sruli@saurymper.com>
>> <mailto:sruli@saurymper.com <mailto:sruli@saurymper.com>>> wrote:
>>
>> What problems on outgoing? are they bouncing? did you
>> update SPF,
>> reverse record?
>>
>>
>> On 16/12/15 05:47, protik wrote:
>>
>> Do I need to follow something specific?
>> Outgoing mails seem to have problem, when moved to new IP
>>
>> Thanks
>>
>>
>> _______________________________________________
>> users mailing list
>> users@lists.kolab.org <mailto:users@lists.kolab.org>
>> <mailto:users@lists.kolab.org <mailto:users@lists.kolab.org>>
>> https://lists.kolab.org/mailman/listinfo/users
>>
>> _______________________________________________
>> users mailing list
>> users@lists.kolab.org <mailto:users@lists.kolab.org>
>> <mailto:users@lists.kolab.org <mailto:users@lists.kolab.org>>
>> https://lists.kolab.org/mailman/listinfo/users
>>
>>
>>
>>
[Attachment #5 (text/html)]
Just used telnet and ipmango services to check the port, it seems to be \
working.<div><br></div><div>I'm actually thinking of making a new instance of \
kolab since I'm using 3.1 and newer is 3.4 I \
guess.</div><div><br></div><div><br>On Wednesday, December 16, 2015, Sruli Saurymper \
<<a href="mailto:sruli@saurymper.com">sruli@saurymper.com</a>> \
wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px \
#ccc solid;padding-left:1ex">Never heard ISP's blocking incoming traffic to port \
25, and they CAN block 1 direction. to test it you can temporarily change postfix \
outbound port to something else.<br> <br>
On 16/12/15 07:39, protik wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"> Actually new ISP had port 25 blocked, so I called and \
requested block to be removed.<br> I can receive emails fine, so I called again to \
see if they are blocking outgoing but they replied if port 25 is open then its open \
both ways (maybe I should somehow check if outgoing port is open)<br> <br>
As for reverse DNS then yes my domain registrar takes care of it (but I'll check \
again).<br> <br>
I'm confused about SSL certificate, because I don't think I use SSL \
certificate (or at least I use self signed certificate), I'll read up more about \
this<br> <br>
Thanks for your help<br>
<br>
<br>
On Tue, Dec 15, 2015 at 11:21 PM, Sruli Saurymper <<a>sruli@saurymper.com</a> \
<mailto:<a>sruli@saurymper.com</a>>> wrote:<br> <br>
SPF and reverse DNS are not a must to get outgoing to work but<br>
many (maybe most?) will not accept emails from servers who do not<br>
have these configured. SPF record you setup in your DNS records<br>
reverse DNS you have to request from your ISP.<br>
I don't know what to make of your current error, doesn't sound<br>
like its linked to SFP/DNS issue, is your SSL certificate IP or<br>
domain bound? now-days only domain bound certs are issued, does<br>
your ISP allow sending mail on port 25?<br>
I cant help you much further on this, I am sure if you find more<br>
info in your log file and post someone will be able to help you.<br>
<br>
<br>
On 16/12/15 07:07, protik wrote:<br>
<br>
I have only setup kolab through wiki instructions. Mail server<br>
was running for last 3 years.<br>
Week back I switched ISP, I didn't change the setup.<br>
<br>
I think SPF and reverse records are updated through dyndns (I<br>
may not be correct though, let me know how to look for<br>
SPF/reverse record)<br>
<br>
After looking through /var/log/maillog<br>
<br>
I've error like:<br>
<br>
smtp[3002]: certificate verification failed<br>
<br>
Regards<br>
<br>
On Tue, Dec 15, 2015 at 10:29 PM, Sruli Saurymper<br>
<<a>sruli@saurymper.com</a> \
<mailto:<a>sruli@saurymper.com</a>><br>
<mailto:<a>sruli@saurymper.com</a> \
<mailto:<a>sruli@saurymper.com</a>>>> wrote:<br> <br>
What problems on outgoing? are they bouncing? did you<br>
update SPF,<br>
reverse record?<br>
<br>
<br>
On 16/12/15 05:47, protik wrote:<br>
<br>
Do I need to follow something specific?<br>
Outgoing mails seem to have problem, when moved to new IP<br>
<br>
Thanks<br>
<br>
<br>
_______________________________________________<br>
users mailing list<br>
<a>users@lists.kolab.org</a> \
<mailto:<a>users@lists.kolab.org</a>><br>
<mailto:<a>users@lists.kolab.org</a> \
<mailto:<a>users@lists.kolab.org</a>>><br>
<a href="https://lists.kolab.org/mailman/listinfo/users" \
target="_blank">https://lists.kolab.org/mailman/listinfo/users</a><br> <br>
_______________________________________________<br>
users mailing list<br>
<a>users@lists.kolab.org</a> \
<mailto:<a>users@lists.kolab.org</a>><br>
<mailto:<a>users@lists.kolab.org</a> \
<mailto:<a>users@lists.kolab.org</a>>><br>
<a href="https://lists.kolab.org/mailman/listinfo/users" \
target="_blank">https://lists.kolab.org/mailman/listinfo/users</a><br> <br>
<br>
<br>
</blockquote>
</blockquote></div>
_______________________________________________
users mailing list
users@lists.kolab.org
https://lists.kolab.org/mailman/listinfo/users
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