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Special Forums IP Networking Dig only returns MX records in +trace mode Post 302942445 by cjcox on Tuesday 28th of April 2015 06:04:56 PM
shouldn't you use:

dig -t mx

Technically at least under Linux, man page says that:

dig mx

works as well (resource name followed by type)

Even though I had success with the order you mentioned too... but it's not documented that way. At least on on my dig man page.
Test Your Knowledge in Computers #232
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sip-dig(1)							  sofia-sip-utils							sip-dig(1)

sip-dig - Resolve SIP URIs. This is an example program for sresolv library in synchronous mode. Author: Pekka Pessi <> Date: Original Created: Tue Jul 16 18:50:14 2002 ppessi Synopsis sip-dig [OPTIONS] uri... Description The sip-dig utility resolves SIP URIs as described in RFC 3263. It queries NAPTR, SRV and A/AAAA records and prints out the resulting transport addresses. The default transports are: UDP, TCP, SCTP, TLS and TLS-SCTP. The SIPS URIs are resolved using only TLS transports, TLS and TLS-SCTP. If not otherwise indicated by NAPTR or SRV records, the sip-dig uses UDP and TCP as transports for SIP and TLS for SIPS URIs. The results are printed intended, with a preference followed by weight, then protocol name, port number and IP address in numeric format. Command Line Options The sip-dig utility accepts following command line options: -p protoname Use named transport protocol. The protoname can be either well-known, e.g., 'udp', or it can specify NAPTR service and SRV identifier, e.g., 'tls-udp/SIPS+D2U/_sips._udp.'. --udp Use UDP transport protocol. --tcp Use TCP transport protocol. --tls Use TLS over TCP transport protocol. --sctp Use SCTP transport protocol. --tls-sctp Use TLS over SCTP transport protocol. --no-sctp Ignore SCTP or TLS-SCTP records in the list of default transports. This option has no effect if transport protocols has been explicitly listed. -4 Query IP4 addresses (A records) -6 Query IP6 addresses (AAAA records). -v Be verbatim. Return Codes 0when successful (a 2XX-series response is received) 1when unsuccessful (a 3XX..6XX-series response is received) 2initialization failure Examples Resolve, prefer TLS over TCP, TCP over UDP: $ sip-dig --tls --tcp --udp 1 0.333 tls 5061 2 0.333 tcp 5060 3 0.333 udp 5060 Resolve with TLS over SCTP (TLS-SCTP) and TLS: $ sip-dig -p tls-sctp --tls 1 0.500 tls-udp 5061 2 0.500 tls 5061 Environment #SRESOLV_DEBUG, SRESOLV_CONF Reporting Bugs Report bugs to <>. Author Written by Pekka Pessi <pekka -dot pessi -at- nokia -dot- com> Copyright Copyright (C) 2006 Nokia Corporation. This program is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Version 1.12.11devel Sat May 7 2011 sip-dig(1)

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