Clients cannot relay through server and some clients cannot send to server.
The cause is the IME_SYSTEM, IME_ADMIN or system account whichever the SMTP service is running under does not have access to the extensions key in the registry (HKLM->Software->MailEnable->MailEnable->Connectors->SMTP->Extensions).
The result of this permission deficiency can be
found in the MailEnable logs and would mean that none of your clients will be
able to relay through the server. The logs entry will be displayed after
the EHLO command like the entry below;
Date Time SMTP-IN Message ID.MAI 956 xxx.xxx.xxx.xxx EHLO EHLO [xxx.xxx.xxx.xxx] 250 [xxx.xxx.xxx.xxx] This server does not offer any extensions 62 21
To fix this open the
registry using the REGEDT32 command (Start->Run->regedt32) and give the
IME_SYSTEM (or account running the SMTP service) full control of the following
You can also verify this by using the telnet command to the server and then typing EHLO after connection as the returned result will be "This server does not offer any extensions" if you are affected by this permission deficiency.
|Product:||MailEnable (All Versions)|
|Class:||TRB: Troubleshooting (Configuration or Environment)|
|Revised:||Wednesday, May 4, 2016|