troubleshooting Question

Some problems sending and recieving emails, semi new to Exchange

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2k3luvr asked on
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Hey everyone, I am hoping someone can help me on this as I kinda got thrown into this issue and now have become the exchange admin, yet I am still pretty new to it. here is our setup.


we have a mail filter (borderware MX filter, MXtreme mail firewall) that gets all the emails, but we do not send out from it. behind the filter is the exchange server 2k3 with sp1 on exchange but not the OS (yet) These two box's are NAT. dns on the public side says try the filter first if failed move to mail server.

we have 3 email domains


The Problem.

well there are many, first.

we can only recieve certain accounts from Yahoo. I created an account and can send to my work address perfectly fine, but yet another guy from the office cant and some customers can't as well. I have checked settings on the other guys yahoo account and compared to mine and they are the same. this also applys to domains Yahoo owns IE. sbcglobal

Second problem.

I just recieved a fax from a customer who got (Deferred: Connection timed out with mail.ourdomain.net undeliverable after 4hrs will try for 5days. I sent an email to them then went into exhange under queues and get a (the remote server did not respond to a connection attempt) This would make me think it is there side, but there are to many customers we are having this problem with.

here is another error I am getting.


You do not have permission to send to this recipient.  For assistance, contact your system administrator.
            <MAIL.ssivt.com #5.7.1 smtp;501 5.7.1 This system is not configured to relay mail from <my.name@ourdomain.net> to <her.name@theredomain.COM> for 0.0.0.0> (0.0.0.0 = our mail server ip not the filter IP)




HELP!    this was just a problem but not it has become a critcal one.

Thanks!

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