Supported protocols
IBM® Web Mail Cloud supports the most prevalent Internet standard protocols for email retrieval.
Protocols
The following list identifies the supported protocols:
- POP3
- IMAP
- Authenticated SMTP
- IMAP IDLE
After the domain is registered, the domain name server of the IMAP, POP, and SMTP service interface cannot be changed.
Ports
Depending on the environment, you might need to open the following network ports on the firewall. For example, if you use only Web mail you need the HTTP port open, but the other ports do not have to be open. The s indicates the port for the secure (SSL) traffic.
- HTTP: 80
- HTTPs: 443
- POP3: 110
- POP3s: 995 (-pop.mail.na.collabserv.com)
- IMAP4: 143
- IMAPs: 993 (-imap.mail.na.collabserv.com)
- SMTP: 587
- SMTPs: 465 (-smtp.mail.na.collabserv.com)
For IMAP, POP, and SMTP connections, open the following IP address on the firewall: 8.12.152.0/24
During setup, the customer needs to own and set the MX record. The MX record is one of many DNS entries that an organization might set. To set the MX record, the customer must have technical control of the DNS settings for the domain.