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Windows Thread, E-Mails being bounced in Technical; Not sure if this is the right forum.... I set my parents up on talktalk e-mail last weekend (they've just ...
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    joe90bass's Avatar
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    E-Mails being bounced

    Not sure if this is the right forum....

    I set my parents up on talktalk e-mail last weekend (they've just gone onto broadband, finally!), when they e-mail me they get the following bounce back (as does another TalkTalk user). I can't decide if it's our server bouncing them or TalkTalk not liking us! I have recently added RBLs to our Exchange Server and have seen a reduction in Spam (we use Sophos Puremessage as well) so am reluctant to take them off.....

    Reporting-MTA: dns; ttsmtp.cpwnetworks.com

    Final-Recipient: rfc822;me@myschool.lea.sch.uk
    Action: failed
    Status: 5.0.0 (permanent failure)
    Remote-MTA: dns; [212.xxx.235.xxx]
    Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'5.7.1 Recipient not authorized, your IP has been found on a block list' (delivery attempts: 0)

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    powdarrmonkey's Avatar
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    Which RBLs?

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    localzuk's Avatar
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    This is your mail server not liking TalkTalk.

  4. Thanks to localzuk from:

    joe90bass (27th February 2009)

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    joe90bass's Avatar
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    Quote Originally Posted by powdarrmonkey View Post
    Which RBLs?
    Definitely Spamhaus - ZEN I think. I'll check the other tomorrow. Maybe I've gone too far the other way now.....

    Cheers local, I hoped it was that way round as I've checked and checked on blacklists and our server isn't listed anywhere (thankfully!)

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    powdarrmonkey's Avatar
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    Hmm, well, ttsmtp.cpwnetworks.com isn't listed at Spamhaus at the moment, but it could have just been removed and DNS is still catching up. Your mail server logs should reveal which RBL it's being caught in. I've dealt with spamhaus before though, in a previous life, and they're a PITA

  7. Thanks to powdarrmonkey from:

    joe90bass (27th February 2009)

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    joe90bass's Avatar
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    it was uceprotect.net, I found it by trawling through the logs. Learnt something new today (i.e. where the relevant logs are!) As well as running scripts in exchange powershell. Amazing how much has been blocked by the RBLs !! Just have to keep an eye for any other false positives, from research it looks like talktalk were blacklisted when their mail servers went down last week.......

    Thanks guys



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