451 Temporary local problem

Hello

i can't get email from my second server, evry time that i make a new account i dont get the email for account creation on the email that i have on my server 1 the error is:


SMTP<< 451 Temporary local problem - please try later
SMTP<< 503 valid RCPT command must precede DATA
SMTP>> QUIT
R=lookuphost T=remote_smtp defer (0): SMTP error from remote mailer after RCPT TO

but it work fine if i use a email that is on a other network, how can i fix this problem?

thx

 

 

 

 

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