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Huge Mail server problme !!! 550 Sender verify failed

Discussion in 'E-mail Discussions' started by neo4242002, Dec 30, 2005.

  1. neo4242002

    neo4242002 Well-Known Member

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    HTML:
    mail@isp.com
        (generated from [email]enquiries@website.com[/email])
        SMTP error from remote mail server after RCPT TO:<mail@isp.com>:
        host mx.isp.com [1.1.1.1]: 550-Verification failed for <nobody@mydedicatedserver.com>
        550-REJECTED: Cannot route message
        550 Sender verify failed
    
    all emails send from one of my client website suddenly get failed. but other websites on same server working fine. only difference I can see that this [website.com] has an SPF record and client use my server to verify email address when SMTP relay. I do not host any email account for this client. i collect all emails and send to mail@isp.com. this was working until 28 dec. but now al emails get failed and i get undeliverable mail failing like above and bellow. but only if that mails going through website PHP mail()


    HTML:
    Verification failed for <nobody@mydedicatedserver.com>
        550-REJECTED: Cannot route message
        550 Sender verify failed
    HTML:
    Verification failed for <nobody@mydedicatedserver.com>
        550-Unrouteable address
        550 Sender verify failed
    Anyone can help please :( :(
     
  2. lloyd_tennison

    lloyd_tennison Well-Known Member

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    Are you forwarding the emails? If so, cannot have SPF. It specically says that in their FAQs. That will break forwarding. I would imagine this is it.

    http://www.openspf.org/faq.html#forwarding

    Repackaging is a bad idea as then any SPAM repackaged looks like it is coming from your server.
     
  3. neo4242002

    neo4242002 Well-Known Member

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    But that was working until 28th Dec. 2005.
     
  4. Izzee

    Izzee Well-Known Member

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    Is the address you are sending it to mail@isp.com being blocked because of nobody@mydedicatedserver.com

    If so there is a fix for the nobody@ issue which has become more and more common of late as more and more mail exchanges block this becuase it is a well known source of spam. Do a forum search for nobody@ as there is an exim tweak that will fix it and send mail out as username@mydedicatedserver.com. AOL and RR block addresses from nobody@ and lots more are joining the block club. ;)

    :)
     
  5. lloyd_tennison

    lloyd_tennison Well-Known Member

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    And how do you know the ISP did not change their SPF rules since?
     
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