FW: Centos 7 & Squirrelmail issues

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So, many many months have passed since I had been working on this without success, other things were far more important so it was shelved.

So now having time to focus on this issue, and the unfortunate luxury of brand new Centos build I dove in. All the systems here while not identical in hardware, server very similar purposes and are configured nearly identically to each other. Imagine my surprise when Squirrelmail 1.4.23 [SVN] was installed on the new Centos build and instantly just worked, completely properly as it had been for several years on several Centos 6 here.

Through a rather lengthy PD process I finally found the root cause using Firefox's inspect element function:

Load denied by X-Frame-Options: https://webmail.yycmaker.ca/src/left_main.php does not permit framing.(unknown)
Load denied by X-Frame-Options: https://webmail.yycmaker.ca/src/right_main.php does not permit framing.(unknown)

Which lead me to the direct cause of the blank screen after login which was:

Header always set X-Frame-Options DENY

Which was hiding in the file:


I greatly appreciate all the time and effort that yourself and the team put into Squirrelmail. In my humble opinion, more so now than ever before it is nice to have a reasonable and useful alternative to the big data platforms.

-----Original Message-----
From: Paul Lesniewski [mailto:paul@xxxxxxxxxxxxxxxx] 
Sent: January 25, 2019 14:59
To: SquirrelMail
Subject: Re: Centos 7 & Squirrelmail issues

Hint: you also need to look in your PHP logs to find out what the error is.  See:


Paul Lesniewski
SquirrelMail Team
Please support Open Source Software by donating to SquirrelMail!

On Fri, January 25, 2019 8:25 am, SquirrelMail wrote:
> Hi,
> I have been using Squirrelmail successfully on a Centos 6 machine for
> quite
> some time but have never been able to get it to work under Centos 7. The 2
> attached screen caps are what is displayed in the browser  after a
> successful login, and the 2nd is what the source code for the page is, a
> clickjacking attempt from webmail.php (I suppose). Below is the result of
> the configtest, although I notice a 22519 error, which I hadn't noticed
> before but I am not certain if it is new.
> Any help is greatly appreciated.
> Cheers, Rob.
> SquirrelMail configtest
> This script will try to check some aspects of your SquirrelMail
> configuration and point you to errors whereever it can find them. You need
> to go run conf.pl in the config/ directory first before you run this
> script.
> SquirrelMail version:
> 1.4.23 [SVN]
> Config file version:
> 1.4.0
> Config file last modified:
> 25 January 2019 00:47:45
> Checking PHP configuration...
>     PHP version 5.4.16 OK.
>     Running as apache(48) / apache(48)
>     display_errors: 1
>     error_reporting: 22519
>     variables_order OK: GPCS.
>     PHP extensions OK. Dynamic loading is disabled.
> Checking paths...
>     Data dir OK.
>     Attachment dir OK.
>     Plugins OK.
>     Themes OK.
>     Default language OK.
>     Base URL detected as: https://webmail.yycmaker.ca/src (location base
> autodetected)
> Checking outgoing mail service....
>     SMTP server OK (220 legolas.rdstekpro.ca ESMTP Postfix)
> Checking IMAP service....
>     IMAP server ready (* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR
> ready.)
> ID
> Checking internationalization (i18n) settings...
>      gettext - Gettext functions are available. On some systems you must
> have appropriate system locales compiled.
>      mbstring - Mbstring functions are available.
>      recode - Recode functions are unavailable.
>      iconv - Iconv functions are available.
>      timezone - Webmail users can change their time zone settings.
> Checking database functions...
>     not using database functionality.
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.

This message has been scanned for viruses and
dangerous content by the MailScanning System, 
and appears to be clean.

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