Frontend Referrals (or lack thereof)

[Brenden Conte]

Thank you!

-Brenden

Andrew Morgan wrote:
> On Wed, 16 Aug 2006, Brenden Conte wrote:
>
>> I'm not sure if this has been asked before, but the list archives 
>> appear to be down and i can no longer connect to the anonymous imap 
>> server (Thunderbird doesn't have a concept of anonymous login, 
>> without LOGIN, apparently).
>>
>> Is there a way to prevent  the frontend machines in a MURDER cluster 
>> from issuing referrals?
>>
>> Thanks for your replies.
>
> I was given the attached patch by a sysadmin at PSU, which I am using 
> here in production.  After you apply the patch, simple add the 
> following to your imapd.conf on your frontends:
>
> # On frontend servers, disable referrals
> proxyd_disable_mailbox_referrals: 1
>
>
> I have not tested this on the v2.3.x series.
>
>     Andy
> ------------------------------------------------------------------------
>
> --- cyrus-imapd-2.2.10.dist/imap/proxyd.c	2004-11-23 09:40:15.000000000 -0800
> +++ cyrus-imapd-2.2.10/imap/proxyd.c	2005-01-14 12:50:11.965210408 -0800
> @@ -1227,7 +1227,7 @@
>      
>      /* Cleanup Globals */
>      proxyd_cmdcnt = 0;
> -    disable_referrals = 0;
> +    disable_referrals = config_getswitch(IMAPOPT_PROXYD_DISABLE_MAILBOX_REFERRALS);
>      supports_referrals = 0;
>      proxyd_userisadmin = 0;
>      proxyd_starttls_done = 0;
> @@ -2823,6 +2823,10 @@
>      prot_printf(proxyd_out, "* CAPABILITY ");
>      prot_printf(proxyd_out, CAPABILITY_STRING);
>  
> +    if (config_getswitch(IMAPOPT_PROXYD_DISABLE_MAILBOX_REFERRALS) == 0) {
> +      prot_printf(proxyd_out, " MAILBOX-REFERRALS");
> +    }
> +		
>      if (config_getint(IMAPOPT_IMAPIDLEPOLL) > 0) {
>  	prot_printf(proxyd_out, " IDLE");
>      }
> diff -r -u cyrus-imapd-2.2.10.dist/imap/version.h cyrus-imapd-2.2.10/imap/version.h
> --- cyrus-imapd-2.2.10.dist/imap/version.h	2004-11-23 09:52:52.000000000 -0800
> +++ cyrus-imapd-2.2.10/imap/version.h	2005-01-14 12:46:38.391024296 -0800
> @@ -55,7 +55,7 @@
>  
>  /* CAPABILITIES are now defined here, not including sasl ones */
>  #define CAPABILITY_STRING "IMAP4 IMAP4rev1 ACL QUOTA LITERAL+ " \
> -	"MAILBOX-REFERRALS NAMESPACE UIDPLUS ID " \
> +	"NAMESPACE UIDPLUS ID " \
>  	"NO_ATOMIC_RENAME UNSELECT " \
>  	"CHILDREN MULTIAPPEND BINARY " \
>  	"SORT THREAD=ORDEREDSUBJECT THREAD=REFERENCES " \
> diff -r -u cyrus-imapd-2.2.10.dist/lib/imapoptions cyrus-imapd-2.2.10/lib/imapoptions
> --- cyrus-imapd-2.2.10.dist/lib/imapoptions	2004-07-21 12:07:45.000000000 -0700
> +++ cyrus-imapd-2.2.10/lib/imapoptions	2005-01-14 12:47:41.125560426 -0800
> @@ -630,6 +630,10 @@
>     connections that these referrals would cause, thus resulting in a higher
>     authentication load on the respective backend server. */
>  
> +{ "proxyd_disable_mailbox_referrals", 0, SWITCH }
> +/* Set to true to disable the use of mailbox-referrals on the
> +   proxy servers.*/
> +
>  { "proxyservers", NULL, STRING }
>  /* A list of users and groups that are allowed to proxy for other
>     users, seperated by spaces.  Any user listed in this will be
>   


-- 
Brenden Conte
System Programmer, C&MT.CIO
Rensselaer Polytechnic Institute
(518)276-4264