Hello I have a chat script on my website when we are offline and any visitor try to email us he gets error email sending faild, when I check exim log for it I saw the following thing tell me how to solve it. Remeber it is a vps having two users root and a home user like suppose abc...
2015-08-05 12:05:10 Failed to get user name for uid -1
2015-08-05 12:05:12 Failed to get user name for uid -1
2015-08-05 12:05:59 Failed to get user name for uid -1
2015-08-05 12:08:42 Failed to get user name for uid -1
2015-08-05 12:13:39 Failed to get user name for uid -1
2015-08-05 12:15:32 Failed to get user name for uid -1
2015-08-05 12:18:07 Failed to get user name for uid -1
2015-08-05 12:18:07 Failed to get user name for uid -1
2015-08-05 13:35:57 Failed to get user name for uid -1
2015-08-06 02:17:04 Failed to get user name for uid -1