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SRS and autoreply on gmail

Discussion in 'E-mail Discussions' started by rclemings, May 5, 2017.

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  1. rclemings

    rclemings Active Member

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    One of my users is having a problem with autoreplies to her aliased gmail address being misrouted.

    See: Autoreply with SRS for what appears to be a similar problem. There it is attributed to exim's SRS implementation. We do have "Enable Sender Rewriting Scheme (SRS) Support" set to "on" in our exim configuration.

    Specifically, my user's real email address is (masked) hername@gmail.com. She has a forwarder on our system. hername@ourdomain.com, which forwards to hername@gmail.com.

    She went into gmail and set up an out-of-office autoreply for hername@gmail.com. Immediately she started getting bounces.

    An example:

    An email came in from herfriend@anotherdomain.com.

    The autoreply then was addressed not to herfriend@anotherdomain.com, as intended, but to SRS0=dHczS=4L=anotherdomain.com=herfriend@ourdomain.com, which fails because herfriend@ourdomain.com is an invalid address.

    Is this a known issue or a configuration problem on our end?
     
    #1 rclemings, May 5, 2017
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Are you using any third-party mail services (e.g. SendGrid) on this system? What does the header look like on the email that's delivered to the Google address (the one that triggers the auto-reply)?

    Thank you.
     
    #2 cPanelMichael, May 5, 2017
  3. rclemings

    rclemings Active Member

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    No on SendGrid, etc. I'm trying to get the user to send me headers for an example message. Is there a place I can send it to you off-forum so I don't have to mask anything?
     
    #3 rclemings, May 6, 2017
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    You can send it via a private message, or post it here with the identifying information removed.

    Thank you.
     
    #4 cPanelMichael, May 8, 2017
  5. rclemings

    rclemings Active Member

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    Apologies for the delay.

    I finally have this information (albeit from a different user, who has a gmail-hosted domain) and can send it to you via private message.

    But how do I do that? I can't find the way.
     
    #5 rclemings, Jun 19, 2017
  6. cPanelMichael

    cPanelMichael Forums Analyst
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    Hi @rclemings,

    I sent you a private message so you can simply click reply on the conversation.

    Thanks!
     
    #6 cPanelMichael, Jun 20, 2017
  7. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    To update, internal case CPANEL-14114 is open to report a scenario where Gmail's autoresponder feature is unable to automatically respond to messages sent from cPanel servers that match the following conditions:

    1. The message sent to Gmail stems from an email forwarder configured in cPanel with the @gmail address as the destination.
    2. SRS is enabled on the cPanel server.

    I'll monitor this case and update this thread with more information as it becomes available.

    Thank you.
     
    #7 cPanelMichael, Jun 22, 2017
  8. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    To update, this behavior was determined to be a product of using SRS when the the remote mail server's autoresponder is configured to respond to the "sender" address instead of the "from" address. The workaround is to disable SRS, or to report the issue to the remote mail server (e.g. Gmail) to determine if it's possible to modify their autoresponder's behavior.

    Thank you.
     
    #8 cPanelMichael, Jun 27, 2017
  9. rclemings

    rclemings Active Member

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    Can you tell whether the intended recipient gets the autoreply or not despite the bounce? Based on a couple of cases I've seen, it looks to me as if the autoreply goes through and the bounce is spurious, but it would be nice to confirm.
     
    #9 rclemings, Jul 11, 2017
  10. cPanelMichael

    cPanelMichael Forums Analyst
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    In the previous report of this issue, the message was bounced instead of delivered. However, if Gmail was able to successfully send the automatic response to the "sender address" it detected, then the message may have gone through. You likely will receive a better answer about the exact behavior of that message from Google.

    Thank you.
     
    #10 cPanelMichael, Jul 11, 2017
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