[imp] New IMAP server, troubleshooting slow IMP performance

[ANANT S ATHAVALE]

----- Message from Christian Schoepplein <c.schoepplein at musin.de> ---------
    Date: Wed, 26 Jul 2017 09:39:51 +0200
    From: Christian Schoepplein <c.schoepplein at musin.de>
Subject: Re: [imp] New IMAP server, troubleshooting slow IMP performance
      To: imp at lists.horde.org


> Hi Simon,
>
> On Wed, Jul 26, 2017 at 12:07:26PM +1000, Simon Wilson wrote:
>> I've just moved over to a new IMAP server on my local network,  
>> migrating IMAP
>> from a CentOS 5 to a CentOS 7 server in the process. Horde/apache are on a
>> separate server on the same network as both the old and new IMAP servers.
>>
>> I'm trying to troubleshoot laggy performance in Imp since the move.
>>
>> For example, refreshing the mail list in Inbox and deleting an email each
>> take 3 to 4 seconds before the Refresh circle stops spinning and the list is
>> updated. This is longer than it was before (1 to 2 seconds typically). It
>> just means that overall Imp feels very slow.
>
> Just a few ideas:
>
> - Is your imap server respongding slow if you connect with another mail
>   client, for example Thunderbird?
> - Are other php scripts on your webserver where imp is running also
>   reacting slow?
> - Are the cache settings for horde and imp the same as they were in the
>   old setup?
> - Are the network settings, especialy routing and DNS, on the new
>   webserver really OK?
>
> Cheers,
>
>   Schöpp
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----- End message from Christian Schoepplein <c.schoepplein at musin.de> -----

Just to Add,

check specially /etc/resolv.conf, if it has any wrong entries.

-- 
      सादर धन्यवाद/ Thanks & Regards
           अनंत / Anant
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