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Rdns/helo

hi guy,
Am having a problem with an email address which am able to send mail to but they cant reply the mail because my ASG is blocking the email reason being RDNS/HELO.

What should i do to allow this sender to be sending mail and at the same i dont want to risk allowing spam through adding an exception for this address.
kindly advice

Thanks

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0 Microsaft over 16 years ago

Acutally there's not much YOU can do (except if you create an exction for this addess/domain).

This normally occurs if sender hasn't configured his system correctly.
HELO: should be HELO senderdomin (eg HELO microsoft.com)
RDNS: For the IP of the senders server must exist a reverse DNS-Entry (in-addr.arpa)

At the SMTP-Log (Mail Manager) you should why the message is rejected (HELO or RDNS).
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0 johnmunyi over 16 years ago

Thanks microsaft! leme try it out will let u know
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0 johnmunyi over 16 years ago

its work fine hope no spam will pass the wall
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