Lost incoming emails

spongedoc

• August 25, 2014 11:22

Hi! I have a big problem. We move to a new server, and configure to the maximum security to email (SPF, DKIM, firewall, cphulk). After this, the email system is working good, but we cannnot receiving emails with a specific sender. I check ALL log in the server (exim, mail, message, error, mail trace), but i not found any clue about these emails. I put the sender SMTP IP addresses to whitelist (access list), but not working. I use spamassasin with score 6, but i cant find any spam from the sender. What is the error? Any sender can send emails normaly to us. Thank you

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  cPanelMichael

  • August 25, 2014 18:54

  Hello :) Try searching for the email address using the "exigrep" utility. EX: exigrep user@domain /var/log/exim_mainlog exigrep user@domain /var/log/exim_rejectlog
  Do you notice any output for either of those commands? Thank you.

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  spongedoc

  • August 26, 2014 07:03

  Hi No output. I try to search partial of the address too, but no result. If this help the email address is: no-reply@email.skrill.com I check this email address with MXTOOLBOX, and i see the rDNS is not configured, but i put the SMTP IP addresses to whitelist. Thank you

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  cPanelMichael

  • August 26, 2014 14:08

  I suggest having that user attempt to send mail to your server again. It seems like the delivery attempt may not have left the sending server, in which case they should receive a specific failure message when attempting to send. Thank you.

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  spongedoc

  • August 28, 2014 10:45

  I trace the problem, and found another one. Our another server try to send email to us. The sender server log say: message accepted, but the receiving server has not accept the mail. The email address was forwarded to another email, and the forwarded message arrived. I turn off the SPF, and DKIM but the problem is same. The logs is not contains any clue... What is this?

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  cPanelMichael

  • August 28, 2014 13:46

  [quote="spongedoc, post: 1718241">I trace the problem, and found another one. Our another server try to send email to us. The sender server log say: message accepted, but the receiving server has not accept the mail. The email address was forwarded to another email, and the forwarded message arrived.
  Could you elaborate on this? I'm not sure I fully understand what you are describing. Thank you.

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  spongedoc

  • August 28, 2014 14:15

  Hi Michael! The situation is: Server A received emails normally, but some email cannot arrive. One of these emails came from our server B. Server B WHM Mail Delivery Reports log say: Message accepted. But the email never arrive to the Server A email box. I cant find any information about this in the Mail Delivery Reports. The Recipient email address has forwarded to another email address, and the forwarded email has arrive normally. But if is send email to not forwarded email address to Server A, that cannot arrive.

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  cPanelMichael

  • August 28, 2014 15:33

  Feel free to open a support ticket using the link in my signature so we can take a closer look. You can post the ticket number here so we can update this thread with the outcome. Thank you.

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  spongedoc

  • August 29, 2014 09:41

  Ticket submitted: 5398357 Thank you

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  cPanelMichael

  • August 29, 2014 16:01

  To update, the sending server had the recipient's domain name in it's /etc/localdomains file. Thus, the email delivery was made to the local server instead of the correct remote mail server. Moving the domain name to /etc/remotedomains resolved the issue. Thank you.

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