POP returns Error 53 or Error 1130

Document ID: 10389

Synopsis

After installing certain Anti Virus products on the server, users may no longer be able to log into their accounts via both POP and IMAP. Logging in through a POP telnet sessions yields err

More Information

POP returns Error 53 or Error 1130 After installing certain Anti Virus products on the server, users may no longer be able to log into their accounts via both POP and IMAP. Logging in through a POP telnet sessions yields error 53 or 1130.

The following entry will be seen in the event viewer:

Event ID : 2011
Source : Srv
Description: The Server's configuration parameter "IRPStackSize" is
too small for the server to use a local device. Please increase the value of this parameter.

This issue will only affect those customers who have specified the BOX directory in MailSite as a UNC path. This is a Windows OS issue rather than a specific problem with MailSite.

The following document details how to change the IRPStackSize parameter.

http://support.microsoft.com/?kbid=177078

It is recommended you take a backup of the system registry before making these changes. These changes are made at your own risk, proceed with care.