Internal Outgoing Connections
| From | To | Protocol | Port |
|---|---|---|---|
|
qmail Server (LINMAILSH) – BackNet NIC or FrontNet NIC |
DNS Resolver Server – BackNet NIC or FrontNet NIC |
TCP, UDP |
53 |
| External Native Repositories (YUM repositories) – BackNet NIC or FrontNet NIC | TCP |
Custom port range Note: The destination hosts and ports may vary depending on YUM repositories. |
|
| qmail Cluster Node (LINMAILCLN01, LINMAILCLN02) – BackNet NIC | DNS Resolver Server – BackNet NIC | TCP, UDP | 53 |
| External Native Repositories (YUM repositories) – BackNet NIC | TCP |
Custom port range Note: The destination hosts and ports may vary depending on YUM repositories. |
|
| Shared Storage Server (LINMAILNFS) – BackNet NIC | TCP, UDP | Important: We do not recommend that you configure a firewall between the Shared Storage Server and qmail Cluster Service Nodes when NFS version 3 is used. | |
|
qmail Server or qmail Cluster Node (LINMAILSH, LINMAILCLN01, LINMAILCLN02) – BackNet NIC |
CloudBlue Commerce Management Node on Linux (LINMN) – BackNet NIC |
TCP |
8352-8500 (except 8440), 80, 16384 – for CloudBlue Commerce Management Node on Linux (LINMN) |
| Backup Server (CUSTBACKUP) – BackNet NIC | TCP | 8352 | |
| LDAP Server (LINMAILLDAP) – BackNet NIC | TCP | 389 (or custom port) | |
| LDAP Replication Server (LINMAILLDAPREPL) – BackNet NIC | TCP |
389 (or custom port) |
|
| WHOSON Server (LINMAILWHOSON) – BackNet NIC | TCP |
9876 (or custom port) |
|
| DrWeb Server (DRWEB) – BackNet NIC | TCP | 3000 | |
| SpamAssassin Server (SA) – BackNet NIC | TCP | 783, 784 |
Internal Incoming Connections
|
From |
To |
Protocol |
Port |
|---|---|---|---|
|
CloudBlue Commerce Management Node on Linux (LINMN) – BackNet NIC |
qmail Server or qmail Cluster Node (LINMAILSH, LINMAILCLN01, LINMAILCLN02) – BackNet NIC |
TCP |
8352-8500 (except 8440) |
| Backup Server (CUSTBACKUP) – BackNet NIC | TCP | 8352 | |
|
Shared Storage Server (LINMAILNFS) – BackNet NIC |
qmail Cluster Node (LINMAILCLN01, LINMAILCLN02) – BackNet NIC |
TCP, UDP |
Important: We do not recommend that you configure a firewall between the Shared Storage Server and qmail Cluster Service Nodes when NFS version 3 is used. |
|
IMP Webmail Server or IMP Webmail Cluster Node (WM) – FrontNet NIC |
qmail Cluster Node (LINMAILCLN01, LINMAILCLN02) – BackNet NIC (through qmail Cluster Load Balancer connected to BackNet and FrontNet Networks) – OR – qmail Server (LINMAILSH) – FrontNet NIC |
TCP |
25, 110, 143, 993, 995, 3100 |
| AtMail Webmail Server or AtMail Webmail Cluster Node (WM) – FrontNet NIC | TCP | 25, 110, 143, 993, 995 | |
| Open-Xchange Server (OXSH) – FrontNet NIC | TCP | 25, 143, 2000 |
External Outgoing Connections
| From | To | Protocol | Port |
|---|---|---|---|
|
qmail Cluster Node (LINMAILCLN01, LINMAILCLN02) – BackNet NIC (through qmail Cluster Load Balancer connected to BackNet and FrontNet Networks) – OR – qmail Server (LINMAILSH) – FrontNet NIC |
PublicNet Network |
TCP |
25 |
External Incoming Connections
| From | To | Protocol | Port |
|---|---|---|---|
|
PublicNet Network |
qmail Cluster Node (LINMAILCLN01, LINMAILCLN02) – BackNet NIC (through qmail Cluster Load Balancer connected to BackNet and FrontNet Networks) – OR – qmail Server (LINMAILSH) – FrontNet NIC |
TCP |
25, 110, 143, 587, 993, 995, 2000 (SIEVE) |