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unable to send/receive intranet email when internet down

My mail server located in dmz (192.168.1.x) and we are in 172.16.1.0/24 ..

normally, we able to send/receive intranet emails fastly, but why when my Internet down, I unable to send/receive intranet email.. any comment?

pls advise

TIA

Winanjaya

1 REPLY

Re: unable to send/receive intranet email when internet down

What is the DNS on the Email server?

Check if it the ISP DNS or local DNS you are using?

if you are using seperate smtp and POP3 servers then use local dns ip or host file entry for your domain on the smtp server.

Also depending on the smtp server config you can define that all mails for ur domain is delivered to your pop3 ip.

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