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Lots of Failed Callouts

Discussion in 'General Discussion' started by mrcbrown, Jun 7, 2007.

  1. mrcbrown

    mrcbrown Well-Known Member

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    Since the upgrade last night which updated Exim, I am getting failures galore:

    451 Could not complete sender verify callout

    And some of these are between servers - so really confused as to why the errors are coming in such a bulk, almost like Exim is not answering call-outs. Not a Exim master, but is this something easy fixable (short of turning off the callout) - ideas?

    Any help is appreciated.
     
  2. simonpearce

    simonpearce Well-Known Member

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    same here - any advice welcome.
     
  3. AndyReed

    AndyReed Well-Known Member
    PartnerNOC

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  4. mrcbrown

    mrcbrown Well-Known Member

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    I have actually been going over this in my head, it seems the servers are not responding to a callout to check for:

    root@hostname

    Which is what UPCP and Logwatch's send as - granted the mail is routed with forwarders within the cPanel setup, however the MTA doesn't seem to know anymore (since cPanel 11) that the domain literal of root@hostname really works.

    I currently have Sender Verify Disabled - which of course is causing a flood of spam, but is also fixing this issue, and allowing some hosts who don't give verification though are valid hosts, a way in - so any way you know to whitelist or get the servers to respond that root@hostname exists?
     
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