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  #1 (permalink)  
Old 12-01-2011, 03:12 AM
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Posts: 164
Default How to stop bounce back mails from System
Hi Guys,

Just curious to know how can I enable catch-all account in zimbra? or let me rephrase the questions, I dont want my emails to be bounced to the requester, is it possible?
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  #2 (permalink)  
Old 12-01-2011, 03:17 AM
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Posts: 164
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Ah my bad I think I found it..should have looked at the site earlier before posting on to the forum.
It can be achieved by

Domain Catchall

If you want to set up an account "user@domain.com" to catch any mail not delivered to existing users in the domain "domain.com", you can configure the account as a domain catchall.

su - zimbra
zmprov modifyAccount user@domain.com zimbraMailCatchAllAddress @domain.com

If the users "john@domain.com", "webmaster@domain.com", and "xyznobody@domain.com" don't exist, and mail arrives for them, it will be delivered to the catchall account "user@domain.com". This will increase the amount of spam delivered, and can lead to being blacklisted. To remove the catchall from an email account, unset the catchall address:

zmprov modifyAccount user@domain.com zimbraMailCatchallAddress ""
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  #3 (permalink)  
Old 12-01-2011, 03:28 AM
Zimbra Consultant & Moderator
  
Posts: 20,315
Default
That is the wrong solution to the problem. A 'catchall' means you will be a spam target, it's what spammers love to send and you will be unable to stop spam from arriving at your server. If you're having a problem with NDR spam then search the forums (start with a search for "ndr") and/or implement some of the techniques for stopping it.
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Regards


Bill
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  #4 (permalink)  
Old 12-01-2011, 03:58 AM
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Posts: 164
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I see...so how can I stop bounced back message from my system? Imagin the scenario if I would like to study the internal email topology I would send email to any non-existent account by whihc system would generate bounced back and offcourse which will have critical information like internal addresses system information and all that stuff.
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  #5 (permalink)  
Old 01-10-2012, 10:43 AM
Advanced Member
  
Posts: 191
Default Issues with Spam is it because of Catchall?
I need assistant I am getting a lot of deferred emails and increasingly incoming emails in the queue about 40 thousands... I have being bombarded with spam. I had two mail boxes one acting as a relay for outgoing email which was seating on a freebsd box. We noticed that the freebsd box was sending out spam emails. Now I want to turn off the freebsd box acting as a relay, but I had a catchall setup. I am in a dark situation. Can someone help me...please?
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  #6 (permalink)  
Old 01-10-2012, 10:51 AM
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Posts: 164
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Search for backscatter in this forum or wiki Or postfix with backscatter in google. Enforce those and you should be good.
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  #7 (permalink)  
Old 01-10-2012, 11:04 AM
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Posts: 191
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Can you direct me to a specific forum please...
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  #9 (permalink)  
Old 01-10-2012, 11:18 AM
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Posts: 191
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Before I make any conclusion, I will have to post my log to get the right help before digging to the backscatter issue. Is that okay?
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  #10 (permalink)  
Old 01-10-2012, 11:42 AM
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Posts: 191
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This is some of the information in the log file that I extracted:
Quote:
Jan 10 08:38:25 zimbra postfix/cleanup[8567]: A50D618CA4F9: message-id=<20120110083142.3941531A05674567@stephen.com>
Jan 10 08:38:25 zimbra postfix/qmgr[14386]: A50D618CA4F9: from=<info@stephen.com>, size=2810, nrcpt=1 (queue active)
Jan 10 08:38:25 zimbra amavis[9759]: (09759-04) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20120110T083402-09759: <info@stephen.com> ->
Jan 10 08:38:25 zimbra postfix/cleanup[2137]: A98C718CA50C: message-id=<20120110083142.99DAB5804A439537@stephen.com>
Jan 10 08:38:25 zimbra postfix/qmgr[14386]: A98C718CA50C: from=<info@stephen.com>, size=2816, nrcpt=1 (queue active)
Jan 10 08:38:25 zimbra amavis[1477]: (01477-11) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20120110T080258-01477: <info@stephen.com> ->
Jan 10 08:38:25 zimbra postfix/cleanup[9665]: AAE1918CA50D: message-id=<20120110083142.EAD403039CFCEBBC@stephen.com>
Jan 10 08:38:25 zimbra postfix/smtpd[11538]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[9759]: (09759-04) Checking: ehrNI9EhE6sG [67.82.8.88] <info@stephen.com> -> <johnking141@hotmail.com>
Jan 10 08:38:25 zimbra amavis[9759]: (09759-04) Open relay? Nonlocal recips but not originating: johnking141@hotmail.com
Jan 10 08:38:25 zimbra postfix/cleanup[8566]: AF13418CA50E: message-id=<20120110083142.57E1A98BC7E36C48@stephen.com>
Jan 10 08:38:25 zimbra postfix/qmgr[14386]: AAE1918CA50D: from=<info@stephen.com>, size=2810, nrcpt=1 (queue active)
Jan 10 08:38:25 zimbra amavis[1477]: (01477-11) Checking: OVocn2-HcMmz [67.82.8.88] <info@stephen.com> -> <johnkimthomsen@hotmail.com>
Jan 10 08:38:25 zimbra amavis[1477]: (01477-11) Open relay? Nonlocal recips but not originating: johnkimthomsen@hotmail.com
Jan 10 08:38:25 zimbra postfix/cleanup[11537]: B2C1F18CA50F: message-id=<20120110083142.63290F2FD4BEB005@stephen.com>
Jan 10 08:38:25 zimbra postfix/smtpd[11539]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra postfix/smtpd[11543]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra saslauthd[14392]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:25 zimbra postfix/smtpd[11544]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra saslauthd[14387]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:25 zimbra postfix/qmgr[14386]: AF13418CA50E: from=<info@stephen.com>, size=2804, nrcpt=1 (queue active)
Jan 10 08:38:25 zimbra postfix/qmgr[14386]: B2C1F18CA50F: from=<info@stephen.com>, size=2810, nrcpt=1 (queue active)
Jan 10 08:38:25 zimbra postfix/smtpd[11545]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[31475]: (31475-16) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20120110T074903-31475: <info@stephen.com> -
Jan 10 08:38:25 zimbra amavis[24834]: (24834-16) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20120110T072213-24834: <info@stephen.com> -
Jan 10 08:38:25 zimbra postfix/smtpd[11547]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra saslauthd[14390]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:25 zimbra saslauthd[14391]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:25 zimbra postfix/smtpd[11549]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[31475]: (31475-16) Checking: 48yqBJqqPIZl [67.82.8.88] <info@stephen.com> -> <johnking67@yahoo.com.au>
Jan 10 08:38:25 zimbra amavis[31475]: (31475-16) Open relay? Nonlocal recips but not originating: johnking67@yahoo.com.au
Jan 10 08:38:25 zimbra saslauthd[14388]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:25 zimbra postfix/smtpd[11550]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[7205]: (07205-06) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20120110T082649-07205: <info@stephen.com> ->
Jan 10 08:38:25 zimbra postfix/smtpd[11551]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[24834]: (24834-16) Checking: l1hZFPwefGCf [67.82.8.88] <info@stephen.com> -> <johnkimone@yahoo.com>
Jan 10 08:38:25 zimbra amavis[24834]: (24834-16) Open relay? Nonlocal recips but not originating: johnkimone@yahoo.com
Jan 10 08:38:25 zimbra postfix/smtpd[11553]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:25 zimbra amavis[7205]: (07205-06) Checking: iJ6KEFHjfty6 [67.82.8.88] <info@stephen.com> -> <johnkindregan@a4isp.com>
Jan 10 08:38:25 zimbra amavis[7205]: (07205-06) Open relay? Nonlocal recips but not originating: johnkindregan@a4isp.com
Jan 10 08:38:26 zimbra postfix/smtpd[11554]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:26 zimbra postfix/smtpd[11556]: connect from ool-43520858.dyn.optonline.net[67.82.8.88]
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 70A253DA012: from=<info@stephen.com>, size=2809, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 682773DA00A: from=<info@stephen.com>, size=2797, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 751D13DA01B: from=<info@stephen.com>, size=2819, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/smtpd[11559]: 945903DA02E: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra postfix/cleanup[2137]: 6B4AB3DA010: message-id=<20120110083142.F8C98539178D0B09@stephen.com>
Jan 10 08:38:26 zimbra postfix/cleanup[8566]: 86CC83DA021: message-id=<20120110083142.BEACBE268F2D1D0B@stephen.com>
Jan 10 08:38:26 zimbra postfix/smtpd[11556]: 9A0823DA032: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra saslauthd[14391]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:26 zimbra saslauthd[14391]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:26 zimbra postfix/cleanup[8567]: 86DB13DA022: message-id=<20120110083142.8A808D4A212E1F46@stephen.com>
Jan 10 08:38:26 zimbra postfix/smtpd[11553]: 99EA73DA02F: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra postfix/cleanup[11606]: 86E113DA025: message-id=<20120110083142.D1E519F1C6C279E6@stephen.com>
Jan 10 08:38:26 zimbra saslauthd[14390]: zmpost: url='https://zimbra.test.po.com:7071/service/admin/soap/' returned buffer->data='<soap:En
Jan 10 08:38:26 zimbra saslauthd[14390]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:26 zimbra saslauthd[14390]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:26 zimbra saslauthd[14387]: zmpost: url='https://zimbra.test.po.com:7071/service/admin/soap/' returned buffer->data='<soap:En
Jan 10 08:38:26 zimbra saslauthd[14387]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:26 zimbra saslauthd[14387]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:26 zimbra saslauthd[14388]: zmpost: url='https://zimbra.test.po.com:7071/service/admin/soap/' returned buffer->data='<soap:En
Jan 10 08:38:26 zimbra saslauthd[14388]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:26 zimbra postfix/smtpd[11545]: B31C43DA034: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra postfix/smtpd[11544]: B31703DA033: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 7F25C3DA020: from=<info@stephen.com>, size=2805, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 86CC83DA021: from=<info@stephen.com>, size=2795, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra saslauthd[14388]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 86DB13DA022: from=<info@stephen.com>, size=2809, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra saslauthd[14392]: zmpost: url='https://zimbra.test.po.com:7071/service/admin/soap/' returned buffer->data='<soap:En
Jan 10 08:38:26 zimbra saslauthd[14391]: zmpost: url='https://zimbra.test.po.com:7071/service/admin/soap/' returned buffer->data='<soap:En
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 86E113DA025: from=<info@stephen.com>, size=2815, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra saslauthd[14392]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:26 zimbra postfix/cleanup[11611]: 9A0823DA032: message-id=<20120110083142.B36FF5047965110E@stephen.com>
Jan 10 08:38:26 zimbra postfix/smtpd[11566]: BD3FE3DA035: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 6B4AB3DA010: from=<info@stephen.com>, size=2801, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/cleanup[9665]: 945903DA02E: message-id=<20120110083142.6A3E3049CB87F168@stephen.com>
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 9A0823DA032: from=<info@stephen.com>, size=2805, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra saslauthd[14392]: zmauth: authenticating against elected url 'https://zimbra.test.po.com:7071/service/admin/soap/'
Jan 10 08:38:26 zimbra postfix/qmgr[14386]: 945903DA02E: from=<info@stephen.com>, size=2803, nrcpt=1 (queue active)
Jan 10 08:38:26 zimbra postfix/smtpd[11558]: BF33D3DA036: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username
Jan 10 08:38:26 zimbra saslauthd[14391]: auth_zimbra: jacobs@test.po.com auth OK
Jan 10 08:38:27 zimbra postfix/cleanup[11609]: 8CED73DA028: message-id=<20120110083143.77C19B5D85EC6AC6@stephen.com>
Jan 10 08:38:27 zimbra postfix/smtpd[9659]: C6F8B3DA038: client=ool-43520858.dyn.optonline.net[67.82.8.88], sasl_method=PLAIN, sasl_username=
Jan 10 08:38:27 zimbra postfix/cleanup[11602]: B31C43DA034: message-id=<20120110083143.D7574DA2B64F218F@stephen.com>
Jan 10 08:38:27 zimbra postfix/cleanup[11599]: 99EA73DA02F: message-id=<20120110083142.36F5D400C11C0AAD@stephen.com>
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