I'm no expert at all but I remember a thread a few months back about
shorewall blocking a connection from abroad for no apparent reason.
Kinda sounds like what is happening to you. It turned out that the ip
address that was being used was a "bogon". I think they are addresses
that are not allocated yet therefore it is presumed that any
connection from these addresses is obviously somewhat malicious so
they get blocked. Don't know if qmail uses these "bogons" but if it
does then that could be it. Hope this helps...
Check the archives that are online at www.linux.ie
On Mon, 21 Mar 2005 10:03:38 +0000, Keith Davey <mush_keithd at yahoo.co.uk> wrote:
>> I recently moved our company mail to a new machine with QMail running on
> Redhat 9. Having always used closed source mail servers before(Netscape
> Mail and Sun Mail server) I am not a QMail expert but it has been easy
> enough to work with.
>> Everything appeared to be working fine, with all mail being routed
> correctly and sending and receiving working for all users, both from
> inside and outside our offices.
>> However, last week some people travelled abroad. If they connected via a
> broadband connection everything works fine. But if they connect via
> wireless or dialup they cannot send mail to external addresses.
>> If I look at the logs in /var/qmail/current I don't see any failed
> sending, and if I get their ip while dialed up and
> check /var/qmail/smtpd/current I can't see a connection to the server
> from that ip.
>> Any ideas? Is there some sort of rule set up in QMail by default that I
> should be aware of?
>> Thanks in advance,
> Irish Linux Users' Group
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