Cannot access Mail in Horde: Mail server closed the connection unexpectedly

Created:

2016-11-16 12:53:01 UTC

Modified:

2017-04-24 12:08:44 UTC

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Cannot access Mail in Horde: Mail server closed the connection unexpectedly

Applicable to:

  • Plesk 11.5 for Linux

Symptoms

  1. When clicking on Mail in Horde webmail the following error appears:

    Mail server closed the connection unexpectedly.
  2. The following record can be found in /var/log/messages/ :

    kernel: imapd[3501]: segfault at 0 ip 00007f7736198eaf sp 00007fff6586b5e8 error 4 in libccrypt.so.4[7f7736197000+3000]

Cause

Unknown library is added to dependencies.

Resolution

  1. Comment the record about the library at /etc/ld.so.preload if that record exists:

    # cat /etc/ld.so.preload
    #/lib64/libccrypt.so.4
  2. Rename the library:

    # mv /lib64/libccrypt.so.4 /lib64/_libccrypt.so.4
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