WWW.ROBTEX.COM - smtp1b.mail.bis.doc.gov

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smtp1b.mail.bis.doc.gov checked at 2025-10-03T21:43:28.861Z 33ms 30/30/30 100% R:4

`smtp1b.mail.bis.doc.gov`

20.158.40.82^{🇺🇸 AS8070}

	MX	`smtp1a.mail.bis.doc.gov`
	MX	`smtp1b.mail.bis.doc.gov`

mail.bis.doc.gov

smtp1b.mail.bis.doc.gov serves as the mail server for mail.bis.doc.gov.

smtp1a.mail.bis.doc.gov is commonly used as a mail server with smtp1b.mail.bis.doc.gov.

smtp1b.mail.bis.doc.gov resolves to a single IP address: 20.158.40.82.

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