Hi,
On 26/10/10 12:40, Sharma, Ashish wrote:
Hi,
I have SpamAssassin integrated on my postfix mail server via 'Amavisd-new'.
The problem that I am facing is that I am receiving same email every 15 second
from same sender with same message-ID on my production mail servers, following
are my postfix logs:
"Oct 25 01:11:02 g2t0433g postfix/smtpd[6497]: connect from
webmail.warwick.net[204.255.24.104]
Oct 25 01:11:02 g2t0433g postfix/smtpd[6497]: 2EAAF23004C:
client=webmail.warwick.net[204.255.24.104]
Oct 25 01:11:02 g2t0433g postfix/cleanup[6579]: 2EAAF23004C:
message-id=<ce130ed7-d498-4461-b076-e3b8ab55b...@warwick.net>
Oct 25 01:11:02 g2t0433g opendkim[17677]: (unknown-jobid): webmail.warwick.net
[204.255.24.104] not internal
Oct 25 01:11:02 g2t0433g opendkim[17677]: (unknown-jobid): not authenticated
Oct 25 01:11:02 g2t0433g opendkim[17677]: (unknown-jobid): no signing domain
match for `warwick.net'
Oct 25 01:11:02 g2t0433g opendkim[17677]: (unknown-jobid): no signing subdomain
match for `warwick.net'
Oct 25 01:11:02 g2t0433g postfix/qmgr[17833]: 2EAAF23004C:
from=<pet...@warwick.net>, size=1987, nrcpt=1 (queue active)
Oct 25 01:11:02 g2t0433g postfix/smtpd[6497]: disconnect from
webmail.warwick.net[204.255.24.104]
Oct 25 01:11:03 g2t0433g amavis[6492]: (06492-09) Passed CLEAN, [204.255.24.104]
[204.255.24.104]<pet...@warwick.net> -> <775eejom36...@xxx.com>,
Message-ID:<ce130ed7-d498-4461-b076-e3b8ab55b...@warwick.net>, mail_id: rJ8M8oQHBzWt, Hits:
1.104, size: 2234, queued_as: 250 Ok, 946 ms
Oct 25 01:11:03 g2t0433g postfix/lmtp[6585]: 2EAAF23004C:
to=<775eejom36...@xxx.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.6,
delays=0.6/0/0.01/0.95, dsn=2.6.0, status=sent (250 2.6.0 Ok, id=06492-09, from
MTA([127.0.0.1]:10030): 250 Ok)
Oct 25 01:11:03 g2t0433g postfix/qmgr[17833]: 2EAAF23004C: removed"
What happens to the message next? It's been passed to Amavis (and
accepted) and so removed from the queue, but what happens when Amavis
hands it back/on to the next MTA?
I don't know if you've redacted the domain, but should you be accepting
delivery of a message for that recipient at all? It doesn't *look* like
a real destination.
How to determine that such mail is genuine or SPAM?
Is there any rule on spamassassin that I can set that will discard such mails?
Right now I have added 'pet...@warwick.net' in my postfix 'main.cf' restriction
list as follows:
smtpd_recipient_restrictions =
check_sender_access hash:/etc/postfix/senderRestrictionList,
How is this file set up? Is it unintentionally allowing some senders to
bypass reject_unauth_destination (see
http://www.postfix.org/SMTPD_ACCESS_README.html) - I would have expected
a permit_mynetworks in there - alternatively are your relay domains set
correctly? You could also consider reject_unverified_recipient.
reject_unauth_destination,
reject_rbl_client zen.spamhaus.org,
reject_rbl_client bl.spamcop.net
permit
Is it the right approach?
Please help
Thanks in advance
Ashish Sharma
Regards,
Dominic
