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Debugging an issue with the Yahoo email proxy


Apache VirtualHost with mod-proxy and SSLYahoo Messenger In Proxy ConnectionSquid reverse proxy with optional SSLSSL broken with proxyDebugging proxy with SSL MITM for Linux suggestion?Strange network proxy issueFTP proxy with SSL supportSquid SSL bump with parent proxyDynamically Proxy 3rd party content to httpsSharePoint - HAProxy reverse-proxy (issue with SSL)






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}







0















Around 7 days ago, Yahoo Mail made a breaking change to the way they handle images in emails. For example, this image:



https://jonnyjordan.com/wp-content/uploads/2018/03/magento-image-upload-button-missing.jpg



would be replaced with this URL, which returns a 400 error:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fjonnyjordan.com%2Fwp-content%2Fuploads%2F2018%2F03%2Fmagento-image-upload-button-missing.jpg&t=1542930092&ymreqid=82730191-abe4-9838-1c9b-03001c01aa00&sig=UOSNzxRTW4bkJE7bbzczKg--~C



However the same image on a different host:



https://i.imgur.com/CNaaenh.jpg



is replaced with this URL, which returns a 200 response:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fi.imgur.com%2FCNaaenh.jpg&t=1542932912&ymreqid=82730191-abe4-9838-1cb9-f00017012900&sig=2xqJh8OvM1uj08ZBqjMnGA--~C



This is replicable across every Yahoo account we've tested. An image on a host will either consistently display or not display. The file path itself seems to make no difference, so I'm guessing it's something to do with the protocol or headers behind those responses.



While we wait for Yahoo to acknowledge this (we're not the only ones having the issue), I wish to determine the cause and work around it.



What possible differences in those responses could cause an image to fail to be proxied?










share|improve this question























  • One of those is your server, right? Check the error logs.

    – Michael Hampton
    Nov 23 '18 at 1:18


















0















Around 7 days ago, Yahoo Mail made a breaking change to the way they handle images in emails. For example, this image:



https://jonnyjordan.com/wp-content/uploads/2018/03/magento-image-upload-button-missing.jpg



would be replaced with this URL, which returns a 400 error:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fjonnyjordan.com%2Fwp-content%2Fuploads%2F2018%2F03%2Fmagento-image-upload-button-missing.jpg&t=1542930092&ymreqid=82730191-abe4-9838-1c9b-03001c01aa00&sig=UOSNzxRTW4bkJE7bbzczKg--~C



However the same image on a different host:



https://i.imgur.com/CNaaenh.jpg



is replaced with this URL, which returns a 200 response:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fi.imgur.com%2FCNaaenh.jpg&t=1542932912&ymreqid=82730191-abe4-9838-1cb9-f00017012900&sig=2xqJh8OvM1uj08ZBqjMnGA--~C



This is replicable across every Yahoo account we've tested. An image on a host will either consistently display or not display. The file path itself seems to make no difference, so I'm guessing it's something to do with the protocol or headers behind those responses.



While we wait for Yahoo to acknowledge this (we're not the only ones having the issue), I wish to determine the cause and work around it.



What possible differences in those responses could cause an image to fail to be proxied?










share|improve this question























  • One of those is your server, right? Check the error logs.

    – Michael Hampton
    Nov 23 '18 at 1:18














0












0








0








Around 7 days ago, Yahoo Mail made a breaking change to the way they handle images in emails. For example, this image:



https://jonnyjordan.com/wp-content/uploads/2018/03/magento-image-upload-button-missing.jpg



would be replaced with this URL, which returns a 400 error:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fjonnyjordan.com%2Fwp-content%2Fuploads%2F2018%2F03%2Fmagento-image-upload-button-missing.jpg&t=1542930092&ymreqid=82730191-abe4-9838-1c9b-03001c01aa00&sig=UOSNzxRTW4bkJE7bbzczKg--~C



However the same image on a different host:



https://i.imgur.com/CNaaenh.jpg



is replaced with this URL, which returns a 200 response:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fi.imgur.com%2FCNaaenh.jpg&t=1542932912&ymreqid=82730191-abe4-9838-1cb9-f00017012900&sig=2xqJh8OvM1uj08ZBqjMnGA--~C



This is replicable across every Yahoo account we've tested. An image on a host will either consistently display or not display. The file path itself seems to make no difference, so I'm guessing it's something to do with the protocol or headers behind those responses.



While we wait for Yahoo to acknowledge this (we're not the only ones having the issue), I wish to determine the cause and work around it.



What possible differences in those responses could cause an image to fail to be proxied?










share|improve this question














Around 7 days ago, Yahoo Mail made a breaking change to the way they handle images in emails. For example, this image:



https://jonnyjordan.com/wp-content/uploads/2018/03/magento-image-upload-button-missing.jpg



would be replaced with this URL, which returns a 400 error:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fjonnyjordan.com%2Fwp-content%2Fuploads%2F2018%2F03%2Fmagento-image-upload-button-missing.jpg&t=1542930092&ymreqid=82730191-abe4-9838-1c9b-03001c01aa00&sig=UOSNzxRTW4bkJE7bbzczKg--~C



However the same image on a different host:



https://i.imgur.com/CNaaenh.jpg



is replaced with this URL, which returns a 200 response:



https://ecp.yusercontent.com/mail?url=https%3A%2F%2Fi.imgur.com%2FCNaaenh.jpg&t=1542932912&ymreqid=82730191-abe4-9838-1cb9-f00017012900&sig=2xqJh8OvM1uj08ZBqjMnGA--~C



This is replicable across every Yahoo account we've tested. An image on a host will either consistently display or not display. The file path itself seems to make no difference, so I'm guessing it's something to do with the protocol or headers behind those responses.



While we wait for Yahoo to acknowledge this (we're not the only ones having the issue), I wish to determine the cause and work around it.



What possible differences in those responses could cause an image to fail to be proxied?







ssl proxy yahoo






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 23 '18 at 0:30









JonathanJonathan

70811224




70811224













  • One of those is your server, right? Check the error logs.

    – Michael Hampton
    Nov 23 '18 at 1:18



















  • One of those is your server, right? Check the error logs.

    – Michael Hampton
    Nov 23 '18 at 1:18

















One of those is your server, right? Check the error logs.

– Michael Hampton
Nov 23 '18 at 1:18





One of those is your server, right? Check the error logs.

– Michael Hampton
Nov 23 '18 at 1:18










1 Answer
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I got this problem today.
Any idea how it can be fixed?
Avast antivirus picks it up and stops access to ecp.yusercontent.com
but the pop up warning keeps coming up with my other browsing sessions





share








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    I got this problem today.
    Any idea how it can be fixed?
    Avast antivirus picks it up and stops access to ecp.yusercontent.com
    but the pop up warning keeps coming up with my other browsing sessions





    share








    New contributor




    Bill is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.

























      0














      I got this problem today.
      Any idea how it can be fixed?
      Avast antivirus picks it up and stops access to ecp.yusercontent.com
      but the pop up warning keeps coming up with my other browsing sessions





      share








      New contributor




      Bill is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.























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        0







        I got this problem today.
        Any idea how it can be fixed?
        Avast antivirus picks it up and stops access to ecp.yusercontent.com
        but the pop up warning keeps coming up with my other browsing sessions





        share








        New contributor




        Bill is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.










        I got this problem today.
        Any idea how it can be fixed?
        Avast antivirus picks it up and stops access to ecp.yusercontent.com
        but the pop up warning keeps coming up with my other browsing sessions






        share








        New contributor




        Bill is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.








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        answered 4 mins ago









        BillBill

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