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Top Forums Shell Programming and Scripting Sendmail Fails to send emails from Linux server. Post 303003024 by Corona688 on Wednesday 6th of September 2017 04:48:55 PM
Old 09-06-2017
You could try to connect to port 25 in telnet. If you can connect from a different machine, it's obviously not firewalled. If you can't connect even from the same machine, port 25 isn't being listened for.
 

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brlapi_connectionSettings_t(3)					      BrlAPI					    brlapi_connectionSettings_t(3)

NAME
brlapi_connectionSettings_t - Settings structure for BrlAPI connection. SYNOPSIS
#include <brlapi.h> Data Fields char * auth char * host Detailed Description This structure holds every parameter needed to connect to BrlAPI: which file the authorization key can be found in and which computer to connect to. Examples: brlapi_connectionSettings_t settings; settings.auth='/etc/brlapi.key'; settings.host='foo'; libbrlapi will read authorization key from file /etc/brlapi.key and connect to the machine called 'foo', on the default TCP port. settings.host='10.1.0.2'; lets directly enter an IP address instead of a machine name. settings.host=':1'; lets libbrlapi connect to the local computer, on port BRLAPI_SOCKETPORTNUM+1 See Also: brlapi_openConnection() Field Documentation char* brlapi_connectionSettings_t::auth For security reasons, libbrlapi has to get authorized to connect to the BrlAPI server. This can be done via a secret key, for instance. This is the path to the file which holds it; it will hence have to be readable by the application. Setting NULL defaults it to local installation setup or to the content of the BRLAPI_AUTH environment variable, if it exists. char* brlapi_connectionSettings_t::host This tells where the BrlAPI server resides: it might be listening on another computer, on any TCP port. It should look like 'foo:1', which means TCP port number BRLAPI_SOCKETPORTNUM+1 on computer called 'foo'. Note: Please check that resolving this name works before complaining Settings NULL defaults it to localhost, using the local installation's default TCP port, or to the content of the BRLAPI_HOST environment variable, if it exists. Author Generated automatically by Doxygen for BrlAPI from the source code. Version 1.0 Mon Apr 1 2013 brlapi_connectionSettings_t(3)
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