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Newsletter: Mail delivery failed: returning message to sender

Discussion in 'E-mail Discussions' started by tabata, Oct 21, 2009.

  1. tabata

    tabata Registered

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    Hi!
    We must send an email to 700 contacts.
    But 40 email don't delivery with this error:
    But if we send an email to contact individually, this is sent! Why?


    sorry for my english... :(
     
  2. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
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    What method was used to send to "700" contacts at once?

    What method was used to test each failed address; was it the same method used to e-mail all 700 contacts?

    I would check the Exim mail server log for more specific details while the deliveries are being attempted to determine more specific information. The following command (via root SSH access) can be used to monitor the Exim main log for relevant data:
    Code:
    # tail -fvn0 /var/log/exim_mainlog
     
  3. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
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    Moderation Note

    I've relocated the thread into the Mail forums so it may receive more relevant discussion and attention around similar topics.
     
  4. tabata

    tabata Registered

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    Hi!
    we always send email with outlook.
    If we send an email only to the 40 contacts individually, that is delivery. (with outlook)
     
  5. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
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    What error details are seen in the returned e-mail bounce messages?

    Is SMTP authentication enabled in Outlook (where Outlook is set to "login" to the e-mail account when sending)?
     
  6. tabata

    tabata Registered

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    The SMTP authentication isn't enabled.
    We use the POP3 Access (SSL)
     
  7. Infopro

    Infopro cPanel Sr. Product Evangelist
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    In Outlook go to where you setup your email accounts, select the one you use to send the email and click edit. Find the "More Settings" button and click. Find the Outgoing Server tab at top and click. On this page tick the "My Outgoing Server (SMTP) Requires Authentication" and, "Use same settings as my incoming mail server" Save and close.

    Assuming you are sending this email directly to all 700 users, and not thru a mail list setup on cPanel in advance, you might make sure you're using BCC. Having them all on a mailman list in cPanel would be a better way to go though, as the system can be configured to drop dead emails. You send one email to the server, it sends out 700 emails to the email list, and drops the dead emails that no longer work.
     
  8. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
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    As Infopro detailed, please ensure that SMTP authentication is enabled in Outlook; this will help ensure your e-mail client (Outlook) is properly logged-in to send e-mail.

    It may also help to ensure that your domain has both SPF and DomainKeys enabled via cPanel, to help reduce Spam and increase chances for successful delivery:
    EmailAuthentication < AllDocumentation/CpanelDocs < TWiki

    I believe it is a good idea to consider another, more reliable method to send to a large recipient list, preferably from a server-side mailing list daemon like Mailman; this will centralize subscribing and unsubscribing users, and also allow users to optionally subscribe or request to subscribe, or unsubscribe independently if needed; using Mailman will also offer greater control in managing the list by having it located on the same system as cPanel.

    The following documentation details the Mailman-specific features in cPanel, including how to create a mailman mailing list:
    MailingLists < AllDocumentation/CpanelDocs < TWiki

    For additional reference, I recommend searching and reading through the official Mailman wiki, FAQ, and documentation resources; for your convenience, you may find the links to these resources below:
    Mailman Features
    Mailman Documentation
    Mailman Frequently Asked Questions
    Mailman mailing lists
    Mailman Wiki
    mailman-users
     
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