I am new to Linux and I am trying to use mailx command but due to firewall it's not working. I tried using mailx on terminal but its giving warnings, as follow:send-mail: warning: inet_protocols: IPv6 support is disabled: Address family not supported by protocolsend-mail: warning: inet_protocols: configuring for IPv4 support onlypostdrop: warning: inet_protocols: IPv6 support is disabled: Address family not supported by protocolpostdrop: warning: inet_protocols: configuring for IPv4 support only 
how to send mail through another mail server on linux
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