Probably not. Postfix doesn't like cer@192.168.1.101, an IP address instead of a domain name. Maybe someone else can come up with a hack around the restriction. Jeffrey Quoting Carlos E. R. <robin.listas@telefonica.net>:
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Hi,
I want to send email from one local computer to another one, without setting up DNS, but it fails:
AmonLanc:~ # mail cer@telcontar.valinor Subject: hola texto . EOT AmonLanc:~ #
2013-08-31T19:51:04.530239+02:00 AmonLanc postfix/qmgr[2299]: 5FC09486D2: from=<root@AmonLanc.valinor>, size=432, nrcpt=1 (queue active) 2013-08-31T19:51:05.999838+02:00 AmonLanc postfix/smtp[20364]: 5FC09486D2: to=<cer@telcontar.valinor>, relay=none, delay=1.7, delays=0.34/0.06/1.3/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=telcontar.valinor type=AAAA: Host not found)
The destination address is solvable to ping, but not to "host", because the later uses DNS.
So far, my only solution is to implement a DNS server, but I hesitate to do it as this machine has little ram (500M). Some people claimed to make postfix work with only the /etc/hosts file, but it does not work for me. Or perhaps I misunderstood.
I have in "/etc/nsswitch.conf":
networks: files dns
- -- Cheers
Carlos E. R. (from 12.3 x86_64 "Dartmouth" at Telcontar)
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