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Bug #35000 mail() function freezes server (Postfix)
Submitted: 2005-10-27 16:18 UTC Modified: 2005-11-04 01:00 UTC
Avg. Score:4.7 ± 0.5
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:3 (100.0%)
From: william at knowmad dot com Assigned:
Status: No Feedback Package: Mail related
PHP Version: 4.4.0 OS: Mandriva Linux 10.1
Private report: No CVE-ID: None
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 [2005-10-27 16:18 UTC] william at knowmad dot com
Using the mail function in a script that gets called 5-10 times in parallel appears to be causing the entire system to freeze when used in conjuction with Postfix under Mandriva Linux 10.1. A hard reboot is necessary to restore function to the system. Because the system is frozen, debugging is difficult. By removing the mail() call, no further freezes have been experienced.


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 [2005-10-27 16:21 UTC]
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

Thank you for your interest in PHP.

 [2005-11-04 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2005-11-15 22:43 UTC] a dot lacombe at istm dot fr
I experiment the same problem on the same configuration. In my case the mail() php function is called within the Claroline e-learning platform. This problem ocures only when MULTIPLE mail requests are sent to postfix server by the way of the php mail() function. I noticed that all mails were delivered to final users normaly just before the server freezes. After that, no way to access any more. Only solution : power off/On !! I found nothing to help me in the system or postfix error logs after system reboot, just like if the system had no time left to write anything in these files before it dies !
 [2005-12-23 07:37 UTC] joel dot miller at applications2u dot com
I have experienced the same problem with Postfix and the mail feature of php().  The package used was listmail pro or multiple simple email scripts.

Mandrake Linux version 10.1, Php 4.3.7, and Postfix "out of the box" with Mandrake.
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