I've managed to set up 3 out of 4 email accounts: 1 gmail and 2 IMAP, Unfortunately stucked with another IMAP account. Error log is :
stream_socket_client(): unable to connect to mail.my_domain.lt:143 (Connection timed out)
These working IMAP accounts are located on my hosting company's servers and EPESI instalation also. Not working IMAP account is provided by another hosting company. With MS outlook all IMAPs work well. Where the problem is hiding? Thank you in advance.