简介
本文档介绍如何通过带有欺骗的邮件安全设备(ESA)测试邮件和网络连接。
如何使用smtping测试通过ESA的邮件和网络连接？
在您的Cisco ESA上，为了正确排查网络问题和识别传输错误，您可能希望在发送到特定MTA时看到邮件日志中看到的错误消息的验证。
要使用smtping等诊断工具，需要连接到ESA的CLI。
然后您可以运行diagnostic > network > smtping。
按照说明测试连通性或发送测试消息。
esa.example.com> diagnostic
Choose the operation you want to perform:
- RAID - Disk Verify Utility.
- DISK_USAGE - Check Disk Usage.
- NETWORK - Network Utilities.
- REPORTING - Reporting Utilities.
- TRACKING - Tracking Utilities.
- RELOAD - Reset configuration to the initial manufacturer values.
[]> network
Choose the operation you want to perform:
- FLUSH - Flush all network related caches.
- ARPSHOW - Show system ARP cache.
- SMTPPING - Test a remote SMTP server.
- TCPDUMP - Dump ethernet packets.
[]> smtpping
Enter the hostname or IP address of the SMTP server:
[esa.example.com]> destination.example.com
The domain you entered has MX records.
Would you like to select an MX host to test instead? [Y]> y
Select an MX host to test.
1. a.example.com
2. b.example.com
3. c.example.com
4. d.example.com
[1]> 1
Select a network interface to use for the test.
1. Management
2. Inbound
3. Outbound
4. auto
[4]> 3
Do you want to type in a test message to send? If not, the connection will be tested
but no email will be sent. [N]> y
Enter the From e-mail address:
[from@example.com]> your_address@example.org
Enter the To e-mail address:
[to@example.com]> test_user@example.com
Enter the Subject:
[Test Message]> Test email
Enter the Body of the message one line at a time. End with a "." on a line by itself.
You should be able to receive this email if there are no border gateway devices
blocking email to Yahoo.
.
Starting SMTP test of host a.mailhost.com.
Resolved 'a.mailhost.com' to 10.1.2.3.
Connection to 10.1.2.3 succeeded.
Command EHLO succeeded
Command MAIL FROM succeeded.
Command RCPT TO succeeded.
Command DATA succeeded.
Message body accepted.
Test complete. Total time elapsed 0.87 seconds
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