Tag Archives: dropped

SMTP email diagnostics and info – troubleshoot email not received

Every now and then somebody will contact you via a method that they wouldn’t normally use and say something like “did you get the email I sent to you a few days ago”. If the answer to this is “no, … Continue reading

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Active Directory Dynamic DNS broken by Juniper SRX firewall ALG

Last week a Juniper SRX firewall was put in to replaceĀ an olderĀ internal firewall. This week a load of Windows Servers dropped out of Active Directory DNS. The scavenging period in AD DNS was configured to be 7 days. Coincidence? I … Continue reading

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Posted in Networking, Windows | Tagged , , , , , , , , , , , , , , , , , , , , | Leave a comment