SMTP port 25 works, but emails bounce back!

Hi peeps

I've got a wireless system running and the smtp port being used is smtp1.betherenow.co.uk. However, whenever trying to send an email, I'm getting a message refused error 554. But I can telnet to port 25 on that particular server. Weird no?
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YashyAsked:
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Alan HardistyCo-OwnerCommented:
Is your ISP Be There?
I use smtp1.bethere.co.uk not smtp1.betherenow.co.uk (although they both resolve to the same IP).
frajicoCommented:
It is possible that the IP you're using to connect to the mail server is on a Black IP List (antiSPAM meassure).

Do you have a login and Password (user autentificatioN) on that mail server or are you reying to relay mail using this mail server?

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frajicoCommented:
sanjaykumar_pCommented:
554 means Relay denied...You need to add wireless system IP in Relay IP's list if you are not authenticating, let me know how your SMTP server is configured?
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