Date: Mon, 19 May 2008 22:01:12 -0500 From: Paul Schmehl <pauls@utdallas.edu> To: freebsd-questions@freebsd.org Subject: Re: Problem Sending Mail With Postfix Message-ID: <D730FF163CD955A882597EE9@Macintosh.local> In-Reply-To: <20080520021525.GA1571@shepherd> References: <1211239052.24579.1254029483@webmail.messagingengine.com> <27CE98CC-346E-4051-A745-1F47DEF0760B@mac.com> <20080520021525.GA1571@shepherd>
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--On May 19, 2008 10:15:25 PM -0400 Sahil Tandon <sahil@tandon.net> wrote: > On May 19, 2008, at 4:17 PM, Montag wrote: > >> host mx1.free.bsd.org said: my.mywebsite.com: Helo command rejected: > > Are you sure it wasn't mx1.freebsd.org? And are you mangling > my.mywebsite.com or is that really the hostname with which your server > is configured to EHLO/HELO? The FreeBSD MXs also run Postfix and > employ the reject_unknown_helo_hostname restriction; it rejects HELO > and EHLO hostnames that lack DNS A or MX records. Your log excerpt > looks suspicious because my.mywebsite.com does have a valid DNS A > record: > > my.mywebsite.com. 96 IN A 208.87.33.150 Yes, but this is a bit weird. Macintosh:~ pauls$ telnet my.mywebsite.com 25 Trying 209.181.247.105... Connected to nullmx.mywebsite.com. Escape character is '^]'. 220 nullmx SMTP EHLO testing.mydomain.com 220 Hello quit 220 Buh-bye! Connection closed by foreign host Why "nullmx.mywebsite.com"? Which resolves to an entirely different IP address. Macintosh:~ pauls$ dig +short nullmx.mywebsite.com 209.181.247.105 But it *is* the MX for that domain. Macintosh:~ pauls$ dig -t MX mywebsite.com ; <<>> DiG 9.4.1-P1 <<>> -t MX mywebsite.com ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49578 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3 ;; QUESTION SECTION: ;mywebsite.com. IN MX ;; ANSWER SECTION: mywebsite.com. 300 IN MX 10 nullmx.mywebsite.com. So I've got no idea why he's having this problem, unless it's because the MX record doesn't point to my.mywebsite.com. Paul Schmehl (pauls@utdallas.edu) Senior Information Security Analyst The University of Texas at Dallas http://www.utdallas.edu/ir/security/
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