To fix the problem I removed problematic ORBS server from list of ORBS
servers.
Search for ORBS server in mail.log with timeout.
Mostly the problem was solved a day after and then I entered that server
on ORBS list.
I hope this will point you in good direction.
Orbs connections are staying open and maxing out connections. Why is
this happening? Below is an example of part of the log
124.6.177.10 53.6s 0.00 0 1 0k 0 Idle: RSET
119.147.50.14 53.7s 0.00 0 1 0k 7 Idle: RSET
71.185.66.19 53.8s 0.00 0 1 0k 0 Idle: RCPT
TO:<detainmentncn9@iceweb
209.104.37.159 53.9s 0.00 0 0 0k 54 Orbs
62.24.139.126 54.8s 0.00 0 0 0k 55 Welcomed
210.19.84.132 55.5s 0.00 0 0 0k 55 Orbs
66.161.134.166 57.8s 0.00 0 0 0k 58 Orbs
80.188.205.27 58.5s 0.00 0 0 0k 58 Orbs
210.188.250.43 58.9s 0.00 0 0 0k 59 Orbs
71.249.232.243 65.8s 0.00 0 0 0k 66 Orbs
151.1.208.74 67.5s 0.00 0 0 0k 67 Orbs
213.236.200.10 69.8s 0.00 0 0 0k 70 Orbs
195.47.193.8 70.9s 0.00 0 0 0k 71 Orbs
84.93.230.244 71.6s 0.00 0 1 0k 0 Idle: RSET
194.79.66.173 71.6s 0.00 0 0 0k 71 Orbs
216.34.240.163 82.2s 0.00 0 0 0k 82 Orbs
200.14.52.129 85.9s 0.00 0 0 0k 86 Orbs
211.40.221.202 86.9s 0.00 0 0 0k 87 Orbs
98.23.250.212 97.0s 0.00 0 0 0k 97 Orbs
62.193.232.10 101.8s 0.00 0 0 0k 102 Orbs
63.240.119.111 110.8s 0.00 0 0 0k 111 Orbs
