To greater enhance the security of your email, Yahoo Business Mail settings are changing to support secure (SSL) connections only when you send and receive email from a mobile device or desktop email client. This change affects IMAP, POP, and SMTP settings. If you do not have SSL enabled, you may see a network failure or enter network password message when sending and receiving email beginning December 4, 2013 for IMAP, and beginning December 10, 2013 for POP and SMTP.
Please verify your current mail server settings and update them if needed, as follows:
Incoming Server: imap.mail.yahoo.com
Port 993 with SSL enabled
Get help with IMAP settings.
Incoming server: pop.bizmail.yahoo.com
Port 995 with SSL enabled
Get help with POP settings.
Outgoing server: smtp.bizmail.yahoo.com
Port 465 or 587 with SSL enabled
Get help with SMTP settings.
We thank you for your attention to this change. For help with setting up Business Mail on specific devices or email clients please visit our Yahoo Business Mail help section or contact us.