I am also getting this problem from last month. Our students are also facing this problem now a days. with reference to the reply of Mr Jonathan Angliss, I would like to say you sir that we have one webserver for webmail interface and from there students logged in to various mail servers using multi login plugin. I didnt change any configuratin of squirrelmail from last month but getting this problem now a days much often. There may be the case that two users may be using the same PC.
PLease let me know how to solve this problem.
Regards
Pallav Dutta
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>
> Hi Iain,
> On Thursday, February 02, 2006, Iain wrote:
>> Hi,
>
>> I am experiencing a strange bug with squirrelmail. The symptoms are as
>> follows:
>
>> Sometimes when a user sends an email the from address changes to another
>> user's email address who is logged in at the same time.
>
>> e.g. user A has email address [EMAIL PROTECTED]
>> user B has email address [EMAIL PROTECTED]
>
>> User A is composing an email. When he hits send, the from address gets
>> set to [EMAIL PROTECTED]
>
> There could be a few causes of this. Are the users on the same
> computer? If so... that is a big issue... and they shouldn't both be
> logging in at the same time. Are they behind a proxy server? Another
> possibility is a PHP bug that has come up from time to time where the
> session id becomes the string 'deleted' instead of an empty string.
> If multiple users hit the same 'deleted' session ID, then they will be
> accessing the same session files.
>
>> 3 x Redhat EL 4 webmail front ends. (PHP 4.3.9, Squirrelmail 1.4.5)
>> 1 x Solaris 8 Backend running:
>> - Cyrus
>> - Postgres 8.0.3 (for address book, userprefs, etc)
>> - NFS
>
>> The 3 webmail front ends are load balanced behind an Alteon load
>> balancer with IP persistency. Sessions are stored on the NFS mount.
>
> While I don't believe it's likely to happen too often, there is a
> possibility that the session id generated by web server 1 has the same
> name as a session id generated on web server 2, this would cause the
> sessions to pollute each other as they're accessed from the same NFS
> share. Have you considered shifting the session files to storing
> locally to each web server? You said the balancer keeps IP persistency
> so it shouldn't cause any harm. What about a custom session handler?
> Somebody posted on to the devel list recently that could be tweaked
> for postgres with some of the suggested fixes.
>
> - --
> Jonathan Angliss
>
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>
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