[imp] Search results of more than 100 messages cause 'error communicating with the server'

[Arjen de Korte]

Citeren Tim ODriscoll <tim.odriscoll at lambrookschool.co.uk>:

> Dear All,
>
> I've recently upgraded to Horde Webmail 5.2.1, with IMP 6.2.1.
>
> When any of my users try searching for messages in a mailbox and the  
> result returns more than 100 results, they get the error above:  
> error communicating with the server.

Could it be you're using GMail as IMAP server?

> In the Apache logs I see this:
>
> PHP Fatal error:  Call to a member function fetch() on a non-object  
> in /usr/share/horde/imp/lib/Contents.php on line 1616, referer:  
> https://mydomain.com/horde/imp/dynamic.php?page=mailbox
>
> If a search yeilds less than 100 results, then another search  
> immediately afterwards returns more than 100, there is no error when  
> a message is clicked on but the message contents shown are from the  
> previous results list.

I tried to duplicate this on a Dovecot IMAP server. It has no problems  
returning searches resulting in several hundreds of messages. My guess  
is that somehow your IMAP server is truncating the number.

> Any idea where I can start searching to fix this?
>
> Many thanks,
>
> Tim
>
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