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Unable to receive emails from twitter for forwarders

Discussion in 'E-mail Discussions' started by Mugoma, Aug 11, 2016.

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  1. Mugoma

    Mugoma Member

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    Since last Friday we have been unable to receive messages from twitter if the emails is delivered via a forwarder. The issue started after last cPanel update.

    We receive messages from anywhere else but not from twitter e.g. twitter confirmation (s) are not delivered.

    We contacted the hosting company and this is what they had to say:

    In regard to cPanel update the admin said:
    Is there a way out other than having to create a mailbox for each email/domain we want to receive? We have several domains and but won't want to login to each. So, we have forwarders that delivered the emails to one mailbox.

    Note:
    1. The forwarders work for all others source (s) - including gmail, yahoo - but fail only for twitter
    2. Till a week ago messages from twitter have been forwarded properly for over 2 years

    Thanks.
     
    #1 Mugoma, Aug 11, 2016
    Last edited by a moderator: Aug 13, 2016
  2. kdean

    kdean Well-Known Member

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  3. Mugoma

    Mugoma Member

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    Thanks for response.

    We have checked 'Sender Rewriting Scheme' on affected server and found it's OFF.

    We also did some tests on 2 more servers ('SERVER 2' & 'SERVER 3') running cPanel and the messages from twitter were delivered. While we don't have admin access to one of the server we checked and verified 'Sender Rewriting Scheme' is OFF on other.

    So, here we have 2 servers, both with 'Sender Rewriting Scheme' OFF, but one is able to forward twitter messages while the other doesn't.

    We also did tests on a fourth server ('SERVER 4') and it can't send emails from twitter to a forwarder except if the forwarder is on the server or a domain not in same network, e.g. gmail, yahoo or any domain not hosted on same network i.e. it can send emails from twitter to a forwarder with destination on any other server except first server ('SERVER 1').

    In summary:
    1. Only twitter messages from domains hosted on 'SERVER 1' to a forwarder with destination emails on domains hosted on 'SERVER 4' (and vice versa) fail
    2. Both 'SERVER 1' and 'SERVER 4' are hosted within same network
    3. Twitter messages from domains hosted on 'SERVER 1' or 'SERVER 4' can be send to forwarder (s) with destination emails (s) on domains hosted n other networks , whether the outside networks run cPanel or not

    Thanks.
     
  4. Mugoma

    Mugoma Member

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    We followed this matter a little more with the hosting company and this is what they said:
    DOMAIN 1 => domain on SERVER 1
    DOMAIN 4 => domain on SERVER 4
    IP 1 => IP address for DOMAIN 1 (SERVER 1)

    We are not sure whether this is entirely true since we has earlier tried to remove SPF on DOMAIN 4 but this did not help resolve the issue. 2ndly, how comes the SPF restriction only affects twitter.com and no other domain?

    But if it is the case how can we change the SPF such that the forwarders work as previously?

    Thanks.
     
    #4 Mugoma, Aug 12, 2016
    Last edited by a moderator: Aug 13, 2016
  5. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    As of cPanel 58, the Reject SPF failures option is now always enabled through SpamAssassin, and we removed the option from WHM's Exim Configuration Manager - Basic Editor interface (Home >> Service Configuration >> Exim Configuration Manager).

    You may find the following thread helpful if you want to exclude certain hosts such as Twitter from SPF verification:

    SPF checker in WHM

    Thank you.
     
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