help me and my friends with our SMP problem

[jkkid]

Tekkit version 2.1.1

windows 7

jdk-7u4-windows-x64

Description of Problem:Hello there me and my friends were playing on a tekkit server today and last night for a bit and it was all good but people were killing us over and over again so it became no fun so i said i would make my own server and i did and me and my brother were playing on it all good and then i wanted my friend to join and he is on a differand network then me and my brother so he couldn't join we all use hamatchi and i have hosted a vinila bukki 1.2.5 server be for and it works fine but now randomly it doesn't work please help me out it seems no matter what ip we use it doesn't work and no matter how we portforward it doesn't work so please help soon please this problem is makeing me very mad i have waisted 5 hours trieing to fix it but i can't please help please

Error Messages:cannot find server

Link to pastebin of log: http://www.pastie.org/3950609

[Jay?]

Link to pastebin of log: i do not know what this is

Read the stickies again.

[jkkid]

ok there you go please help me

[Jay?]

ok there you go please help me

you have an MD5 mismatch. We don't have a clear solution for this problem, but if you search the forum for "MD5 mismatch" you can find a couple of user solutions that have mixed results.

[jkkid]

ok i will try thank you

[jkkid]

so does my friend have to do this so he can join my server witch me and my brother can