[Tickets #14999] Email attachment more than 8 MB shows HORDE [imp] Server closed the connection unexpectedly

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Ticket URL: https://bugs.horde.org/ticket/14999
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  Ticket             | 14999
  Created By         | amarnath.m at endurance.com
  Summary            | Email attachment more than 8 MB shows HORDE [imp]
                     | Server closed the connection unexpectedly
  Queue              | IMP
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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amarnath.m at endurance.com (2020-03-18 13:50) wrote:

Hi team,

Email with attachment more than 8 MB is not going through and giving  
the error shown below. we are using Horde 5.2.21 which is the latest  
stable release,

Also i have enabled horde debug log and can only see this :
2020-03-18T12:56:31+00:00 ERR: HORDE [imp] Server closed the  
connection unexpectedly. [pid 157556 on line 1160 of "C:\Program Files  
(x86)\Parallels\Plesk\Webmail\horde\horde\imp\lib\Compose.php"]

Also memory_limit we tried to increase it to 512 MB even that doesn't  
help. We are not able to figure out the cause, attachment limit is set  
as 32 MB hence it should work but even 10 MB files are not able to get  
send.



amarnath.m at endurance.com (2020-03-18 13:50) uploaded: Screenshot_347.png

https://bugs.horde.org/h/services/download/?app=whups&actionID=download_file&file=Screenshot_347.png&ticket=14999&fn=%2FScreenshot_347.png