If you are trying to set up your mail program (e.g.: Outlook, Mail, Thunderbird, etc...) and want to make sure you can reach Leanservers' mail infrastructure you could do so by executing the following commands on a command-line console (under Windows: Start | Run | cmd; under MAC OS X: Terminal; under Linux: Console):
1) POP3 connectivity testing
telnet mail.leanservers.com 110
Trying 209.17.171.29...
Connected to mail.leanservers.com.
Escape character is '^]'.
+OK <10551.1300268149@mail.leanservers.com>
QUIT
+OK
Connection closed by foreign host.
2) POP3S connectivity testing
telnet mail.leanservers.com 995
Trying 209.17.171.29...
Connected to mail.leanservers.com.
Escape character is '^]'.
EXIT
Connection closed by foreign host.
3) IMAP connectivity testing
telnet mail.leanservers.com 143
Trying 209.17.171.29...
Connected to mail.leanservers.com.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc. See COPYING for distribution information.
Connection closed by foreign host.
4) IMAPS connectivity testing
telnet mail.leanservers.com 993
telnet mail.leanservers.com 993
Trying 209.17.171.29...
Connected to mail.leanservers.com.
Escape character is '^]'.
EXIT
Connection closed by foreign host.
5) SMTP connectivity testing
telnet mail.leanservers.com 587
Trying 209.17.171.29...
Connected to mail.leanservers.com.
Escape character is '^]'.
220 mail.leanservers.com - Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP
QUIT
221 mail.leanservers.com - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.