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Article Number: 000060536

NetWorker：未收到備份電子郵件通知「連線至 SMTP 主機失敗：No such file or directory"

Summary: NetWorker 備份電子郵件通知已設定，但未收到任何電子郵件。備份工作流程記錄顯示 SMTP 主機的連線失敗。

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Article Content

Symptoms

  • 操作系統型電子郵件命令是在原則/工作流程層級設定，但未在完成/失敗時收到電子郵件通知。
  • 工作流程「顯示訊息」會報告「連線至 SMTP 主機失敗：No such file or directory"
MM/DD/YYYY HH:MM:SS Starting Protection Policy 'Server Protection' workflow 'Server backup'.
MM/DD/YYYY HH:MM:SS Starting action 'Server Protection/Server backup/Server db backup' with command: 'nsrdbsave -l 1'.
MM/DD/YYYY HH:MM:SS Action 'Server Protection/Server backup/Server db backup's log will be in 'C:\Program Files\EMC NetWorker\nsr\logs\policy\Server Protection\Server backup\Server db backup_449081.raw'.
MM/DD/YYYY HH:MM:SS Action 'Server Protection/Server backup/Server db backup' succeeded.
MM/DD/YYYY HH:MM:SS Starting action 'Server Protection/Server backup/Expiration' with command: 'nsrim -MXq'.
MM/DD/YYYY HH:MM:SS Action 'Server Protection/Server backup/Expiration's log will be in 'C:\Program Files\EMC NetWorker\nsr\logs\policy\Server Protection\Server backup\Expiration_449095.raw'.
connect to SMTP host failed: No such file or directory
connect to SMTP host failed: No such file or directory
MM/DD/YYYY HH:MM:SS Action 'Server Protection/Server backup/Expiration' succeeded.
MM/DD/YYYY HH:MM:SS Workflow 'Server Protection/Server backup' succeeded.

Cause

SMTP 連接埠 25 被封鎖。

Resolution

NetWorker 使用作業系統命令傳送電子郵件。您應先從操作系統成功傳送電子郵件，才能從 NetWorker 內傳送電子郵件。以下是一些疑難解答步驟，可用於隔離 NetWorker 伺服器和郵件伺服器之間可能的通訊問題。
  1. 電子郵件應從 NetWorker 伺服器的作業系統從命令行成功傳送：
Linux：ls -lh | mail -s mailserver-name-or-ip -s “subject” recipient-email-address
窗戶：DIR |smtpmail -h mailserver-name-or-ip -s “subject” recipient-email-address

注意：在上述命令中，將斜體值替換為來自您環境的對應資訊。如果這些命令成功傳回提示，則會將包含目錄列表的電子郵件傳送至命令中指定的電子郵件位址。
  1. 如果您不知道郵件伺服器位址，您可以嘗試使用網域的 MX 記錄來查詢伺服器：
Linux： dig your_domain.com MX
Windows：nslookup
set q=mx
your_domain.com
  1. NetWorker 伺服器必須能夠解析郵件伺服器的完整功能變數名稱 （FQDN）、簡短名稱、IP 位址：nslookup mailserver-name
注意：如果 NetWorker 伺服器無法透過 DNS 解決郵件伺服器，請為其建立或更正 DNS 專案;否則，請將郵件伺服器的IP位址和主機名新增至NetWorker 伺服器的本機主機檔案：

Linux：/etc/hosts
Windows：C：\Windows\System32\drivers\etc\hosts
  1. NetWorker 伺服器必須透過ICMP ping 連線至郵件伺服器：ping mailserver-name
  2. NetWorker 伺服器必須連接到郵件伺服器的 SMTP 連接埠 （埠 25）：nsrports -t mailserver-name -p 25
C:\Windows\system32>nsrports -t mailserver.domain.com -p 25
Forward lookup for mailserver
Query time:              0.001 sec
Canonical name (CNAME):  mailserver.domain.com
Address (A):             10.0.0.2
Connect to port 25:      Succeeded (0.088 sec)

Reverse lookup for 10.0.0.2
Query time:              0.000 sec
Name:                    mailserver.domain.com
注：nsrports 是一種 NetWorker 命令，可與 NetWorker 伺服器軟體一起安裝。此命令可用於任何 NetWorker 伺服器，並可用於驗證名稱解析度和埠連線能力。

Additional Information

NetWorker：如何設定原則電子郵件通知

Article Properties

Affected Product

NetWorker

Product

NetWorker

Last Published Date

06 Oct 2023

Version

3

Article Type

Solution

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