Hi,

after the upgrade at SOGo 5.1 (but it may have been there even before) we notice that when a new user setup their iPhone with ActiveSync protocol for the first time we have a peak of IMAP connection on IMAP server (Dovecot) during the initial syncronization.

Currently we have a limit of 50 IMAP session per IP and this limit is reached fast by SOGo. Analysing more in deep these sessions they are doing nothing, probably are open for FETCH and not close after.

Is this intentional or can be limited/fixed?

Thanks

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Alessio Cecchi
Postmaster @ http://www.qboxmail.it
https://www.linkedin.com/in/alessice

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