NetXMS Support Forum

Hi

I have an installation of NetXMS V2.1-M1 on Linux.
I'm not 100% sure, but I think the problem appeared with the update from V2.0.6. There is a local Postfix installation on the NetXMS server itself for relaying outgoing mails to mail server of Microsoft Exchange Online by TLS. In NetXMS server 'SMTPServer = localhost'. That worked fine in V2.0.6. But now no mails arrive at the Postfix server. I set DebugLevel of the NetXMS server to 6 and I see in the log:

"...EVENT SYS_SMTP_FAILURE [22]... Unable to resolve SMTP server name"

What I tried yet:

   
• send mail on command line on the NetXMS server (by nc or telnet) to the local Postfix server (same receipient, same sender) -> works
• searched for ingoing mails in Postfix logs -> no mails
• changed server conf value SMTPServer to '127.0.0.1' (so no name resolution necessairy) -> not working
• changed server conf value SMTPServer to FQDN of server -> not working

What can I do to further troubleshoot this? As we cannot get any mails from NetXMS now.

Thanks
Dani

edit: typos and precision

Has somebody an idea?

Thanks
Dani

Hi,

there is a bug introduced in 2.1-M1 - SMTP sender do not accept loopback addresses. I'll fix that for next release. In the meantime you can use server's external IP as mail server address.

Best regards,
Victor

Hi Victor

I just tested with IP address, that works! Thanks a lot for your help.

best regards
Dani