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506 Command to allow DNS larger than 512

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jjeffords

MIS
Mar 25, 2004
71
US
Hey guys as i am sure i am not the only one from reading around and all. I am having trouble with my new server communicating with Earthlink due to their huge byte size of their MX records for their mailserver. The new DNS protocol will not work unless my firewall is capable of allowing byte sizes larger than 512 through.So i need the Command to enter into a Pix 506 to allow DNS packets in excess of 512 bytes through.
I have tried no fixup protocol dns 53 and i get this error
bad protocol dns
Usage: [no] fixup protocol <prot> [<option>] <port>[-<port>]
Could someone tell me what i am doing wrong and give me the command i need.
I also tried it without the port number i get the same error message
Thanks in Advance
 
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