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PowerMTA 5.5r1 is out!!!!  Please contact support@port25.com for a license and download access.

Author Topic: 451 Resources temporarily unavailable. Please try again later [#4.16.1]  (Read 179555 times)

FMG123

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Hi!. A question for everyone and specially the forum experts like Teneo and Calvin :) ... I'm seeing a lot more of these errors on yahoo lately. Does anyone know why they show up and what they exactly mean (and of course how to reduce them :) ). Thanks a lot in advance!!!!
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FMG123

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Thanks Calvin!. What is weird is that I'm not seeing any other errors on those IPs (no gl01s or TSs...). Just this "transient" error. Do you think I should back off on it? Thanks!
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CaLViN

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  • Hasan Kurtoglu
    • PowerMTA Administration Service

If you are not getting any other errors,it is possible that yahoo is having problems.
Keep monitoring your logs then.
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VIN786

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These errors are absent from our servers, wonder if you are sending any attachments and have you checked the hard bounces, are they more than usual, like bad email addresses?
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VIN786

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Yahoo has disabled a whole bunch of inactive users, I think it is about 7% and the last day for inactive users (to stay active) to login was July 15th, did you start seeing the errors after this date?
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FMG123

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Hi VIN786. No, it was not on that date specifically. It seems like a random thing. One day we see a lot of them and the following day only a few. Actually, when we see more, we also see a bunch more activity (opens and clicks). And the lists we send don't really change that much so I wouldn't say its a matter of name composition. A real puzzle ... As Calvin said, I think its more related to yahoo's mx's performance. Are you also seeing these errors?.
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