[Bug 658795] Re: postfix gets confused with non-alphanumeric local hostname

[gjarboni]

It's a valid hostname (numeric sub-domains are allowed in DNS), but it's
not a valid FQDN. However I'm not convinced that newaliases should fail
like this. Shouldn't it just create an empty alias database? Should
Postfix be policing which TLD's are valid? It seems like that should be
up to the receiving MTA. BTW, AOL, Yahoo, & gmail all accept mail from
username at tosh.0:

telnet f.mx.mail.yahoo.com 25
Trying 98.137.54.237...
Connected to f.mx.mail.yahoo.com.
Escape character is '^]'.
220 mta121.mail.sp2.yahoo.com ESMTP YSmtp service ready
HELO tosh.0
250 mta121.mail.sp2.yahoo.com
Mail From: <test at tosh.0>
250 sender <test at tosh.0> ok
RCPT To: <--removed--i at yahoo.com>
250 recipient <--removed-- at yahoo.com> ok
quit
221 mta121.mail.sp2.yahoo.com
Connection closed by foreign host.

telnet mailin-04.mx.aol.com 25
Trying 64.12.90.66...
Connected to mailin-04.mx.aol.com.
Escape character is '^]'.
220-mtain-mb10.r1000.mx.aol.com ESMTP Internet Inbound
HELO tosh.0
250 mtain-mb10.r1000.mx.aol.com
Mail From: <test at tosh.0>
250 2.1.0 Ok
rCPT to: <mailer-daemon at aol.com>
250 2.1.5 Ok
quit
221 2.0.0 Bye

telnet alt4.gmail-smtp-in.l.google.com 25
Trying 74.125.95.27...
Connected to alt4.gmail-smtp-in.l.google.com.
Escape character is '^]'.
220 mx.google.com ESMTP u6si18964466ibk.60
HELO tosh.0
250 mx.google.com at your service
Mail From: <test at tosh.0>
250 2.1.0 OK u6si18964466ibk.60
rcpt to: <--deleted-- at gmail.com>
250 2.1.5 OK u6si18964466ibk.60
quit
221 2.0.0 closing connection u6si18964466ibk.60

-- 
postfix gets confused with non-alphanumeric local hostname
https://bugs.launchpad.net/bugs/658795
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