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Turning on the Mail Service (imap) does not open ports 143 nor 993

Hello folks,


I have a new install of Mavericks Server. I have an issue with the mail service, namely, even when turning it on, the ports 143 (imap) and 993 (imaps) appear to stay closed. The mail service seems to run fine (at least, that is what Server tells me). But a simple port scan shows that neither ports 143 nor 993 are open. Which makes it difficult for clients to connect to the server.


Anyone is experiencing this? Does anyone have an idea on how to open those ports? I have no experience with the pfctl command, which is probably the way to go?


Thank you very much for your help. Regards.

OS X Server, Mountain Lion Server

Posted on Nov 1, 2013 9:07 AM

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Posted on Nov 1, 2013 9:34 AM

I think I solved my own question:


When listing the mail settings using


sudo serveradmin settings mail


I saw the folling line:


mail:imap:enable_imap = no


I then turned of the mail service, set this setting to true and turned the mail service back on. Like this:


sudo serveradmin stop mail

sudo serveradmin settings mail:imap:enable_imap = yes

sudo serveradmin start mail


Both ports are now open.

1 reply
Question marked as Best reply

Nov 1, 2013 9:34 AM in response to elgringito

I think I solved my own question:


When listing the mail settings using


sudo serveradmin settings mail


I saw the folling line:


mail:imap:enable_imap = no


I then turned of the mail service, set this setting to true and turned the mail service back on. Like this:


sudo serveradmin stop mail

sudo serveradmin settings mail:imap:enable_imap = yes

sudo serveradmin start mail


Both ports are now open.

Turning on the Mail Service (imap) does not open ports 143 nor 993

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