Old Email Hostnames New Email Hostnames (current)
mail.citasystems.net mail.webgearsystems.com
pop3.citasystems.net pop3.webgearsystems.com
imap.citasystems.net imap.webgearsystems.com
smtp.citasystems.net smtp.webgearsystems.com
Email Clients Links
Outlook 2010 https://support.office.com/en-us/article/Change-email-account-settings-58b62e89-6a9b-467b-8865-d5633fcacc3f
Outlook 2013 / Outlook 2016 https://support.office.com/en-us/article/Change-email-account-settings-a197148c-fa4c-4f91-9153-8607a98d3fcf
iPhone / iPad https://support.jubjub.com/knowledgebase/43/How-to-update-SMTP-Outgoing-Server-settings-on-iPhone-or-iPad.html
Apple Mail http://support.macmate.me/1059/changing-outgoing-mail-server-settings-2/