list server

I have a couple of servers from different clients where the List Server isn't working. Not much in the logs.

10.11.6

Server 5.2

Oct 4 14:15:13 list_server_post[65247] <Info>: message: 1475550913.349211.0B085A65A6DD9273.msg from: user@domain posted to: workorders (size=1507)

Oct 4 14:15:18 list_server_mgr[64604] <Info>: callback: add agent event: 773875B5-025F-4C7F-8AE8-779B8C27AAC8

Oct 4 14:15:19 list_server_agent[65255] <Info>: list agent started for list type(1) ID: 773875B5-025F-4C7F-8AE8-779B8C27AAC8

Oct 4 14:15:19 list_server_agent[65255] <Info>: connect to: 127.0.0.1 [port 25]

Oct 4 14:16:34 list_server_agent[65255] <Error>: SMTP read returned error: Operation timed out

Oct 4 14:16:34 list_server_agent[65255] <Error>: "SMTP Connect" failed

Oct 4 14:16:34 list_server_agent[65255] <Info>: disconnect from: 127.0.0.1

Oct 4 14:16:34 list_server_agent[65255] <Error>: message deliver error(8): 1475550913.349211.0B085A65A6DD9273.msg to list: workorders

Oct 4 14:16:34 list_server_agent[65255] <Info>: moved message: 1475550913.349211.0B085A65A6DD9273.msg to: /Library/Server//Mail/Data/listserver/messages/retry

Oct 4 14:16:34 list_server_agent[65255] <Info>: list agent sleeping for 30 seconds

Oct 4 14:17:04 list_server_mgr[64604] <Info>: list agent exited: pid=65255, cpc=0