Configuration Settings document - IMAP - Advanced tab
Greeting section
FieldEnter
IMAP server greetingThe greeting the IMAP service sends to clients connecting over TCP/IP.
IMAP SSL greetingThe greeting the IMAP service sends to clients connecting over SSL.
IMAP SSL redirect greetingThe greeting the IMAP service sends to clients when the TCP/IP port is configured to redirect connections to SSL.

Worker thread pool section
Maximum number of IMAP worker threadsThe total number of threads available in the IMAP service's thread pool, including:
  • Login conversion threads for converting mail files to IBM® Lotus® Domino™ IMAP format
  • FETCH threads for transmitting validated client requests to the Domino mail server
  • FETCH response threads for transmitting message data from the mail server in response to client FETCH requests.
Maximum number of response threads per FETCHThe number of threads available to transmit message data to fulfill a given FETCH request. Default is four.
Maximum number of FETCH threads allowedThe Number of concurrent threads the IMAP service can use to transmit client requests to FETCH message data to the Domino mail server
Maximum number of FETCH response threads allowedThe number of threads the IMAP service can use to return message data from the Domino mail server in response to FETCH requests received from all active IMAP sessions.