Re: Spamcop listed gmail?
On Fri, 20 Jan 2012 00:24:33 -0500 Simon Brereton articulated: On Jan 19, 2012 7:13 PM, Steve Fatula compconsult...@yahoo.com wrote: From: Robert Fitzpatrick rob...@webtent.org To: Postfix postfix-users@postfix.org Sent: Monday, January 16, 2012 1:12 PM Subject: Spamcop listed gmail? Perhaps this is not the place for this, I didn't find a mailing list on the spamcop site and just looking to see if this is experienced by others. Got two calls this morning, both not receiving mail from gmail users and both being blocked by my usage of 'reject_rbl_client bl.spamcop.net'. Anyone other users of this config parameter seeing this? You should not block outright. Either use a scoring system (perhaps postscreen), or, DNSWL to first whitelist the servers. I personally report yahoo, gmail, etc. all the time via Spamcop when I get spam from them. My hope is they will at least find the account and disable it, possibly, with luck, even block emails going out just like it in the future. What he said... Personally, I have found NOT receiving mail from Google to be a plus. In any case, the is a forum on SPAMCOP that is active. I have used it in the past, although several years ago. I just checked and it is still there. There is also information on possible configurations for the Spamcop lists and Postfix that might prove useful. -- Jerry ✌ postfix-u...@seibercom.net _ TO REPORT A PROBLEM see http://www.postfix.org/DEBUG_README.html#mail TO (UN)SUBSCRIBE see http://www.postfix.org/lists.html Maslow's Maxim: If the only tool you have is a hammer, you treat everything like a nail.
Re: Spamcop listed gmail?
From: Robert Fitzpatrick rob...@webtent.org To: Postfix postfix-users@postfix.org Sent: Monday, January 16, 2012 1:12 PM Subject: Spamcop listed gmail? Perhaps this is not the place for this, I didn't find a mailing list on the spamcop site and just looking to see if this is experienced by others. Got two calls this morning, both not receiving mail from gmail users and both being blocked by my usage of 'reject_rbl_client bl.spamcop.net'. Anyone other users of this config parameter seeing this? You should not block outright. Either use a scoring system (perhaps postscreen), or, DNSWL to first whitelist the servers. I personally report yahoo, gmail, etc. all the time via Spamcop when I get spam from them. My hope is they will at least find the account and disable it, possibly, with luck, even block emails going out just like it in the future.
Re: Spamcop listed gmail?
On Jan 19, 2012 7:13 PM, Steve Fatula compconsult...@yahoo.com wrote: From: Robert Fitzpatrick rob...@webtent.org To: Postfix postfix-users@postfix.org Sent: Monday, January 16, 2012 1:12 PM Subject: Spamcop listed gmail? Perhaps this is not the place for this, I didn't find a mailing list on the spamcop site and just looking to see if this is experienced by others. Got two calls this morning, both not receiving mail from gmail users and both being blocked by my usage of 'reject_rbl_client bl.spamcop.net'. Anyone other users of this config parameter seeing this? You should not block outright. Either use a scoring system (perhaps postscreen), or, DNSWL to first whitelist the servers. I personally report yahoo, gmail, etc. all the time via Spamcop when I get spam from them. My hope is they will at least find the account and disable it, possibly, with luck, even block emails going out just like it in the future. What he said... Simon
Re: Spamcop listed gmail?
On 1/16/2012 2:28 PM, Stan Hoeppner wrote: We recommend that when using any spam filtering method, users be given access to the filtered mail - don't block the mail as documented here, but store it in a separate mailbox. Or tag it and provide users documentation so that they can filter based on the tags in their own MUA. We provide this information only for administrators who cannot use a more subtle approach for whatever reason. And then I just followed their listed examples, crazy I know. The thing that gets me is these are the first and only calls I have received on this in all our years of using this config parameter. I'll definitely look into it more...thanks. -- Robert rob...@webtent.org
Re: Spamcop listed gmail?
On 1/17/2012 2:08 AM, Robert Schetterer wrote: why do you use spamcop ? Why wouldn't I? -- Robert rob...@webtent.org
Re: Spamcop listed gmail?
On 17 Jan 2012, at 8:20, Robert Fitzpatrick wrote: On 1/17/2012 2:08 AM, Robert Schetterer wrote: why do you use spamcop ? Why wouldn't I? Because it has a long-running tendency to intermittently list various major legitimate freemail outlet points. This is not a new behavior or a rare one. It happens less than it did inn the early years of SpamCop, but it still happens frequently enough that I would guess that there's never a version of the SpamCop BL that does not have one IP listed which emits some legitimate mail from one of the Big 4. That's actually not enough of a reason to not use SpamCop for many people, both because some people can tolerate rejecting a few hundredths of a percent of their non-spam freemail flow (which may make the losses so sparse as to be essentially invisible) and because DNSBL's can be use in non-absolute ways.
Re: Spamcop listed gmail?
On 1/16/2012 1:12 PM, Robert Fitzpatrick wrote: Perhaps this is not the place for this, I didn't find a mailing list on the spamcop site and just looking to see if this is experienced by others. Got two calls this morning, both not receiving mail from gmail users and both being blocked by my usage of 'reject_rbl_client bl.spamcop.net'. Anyone other users of this config parameter seeing this? Jan 16 13:52:25 mx1 postfix/smtpd[72538]: NOQUEUE: reject: RCPT from mail-tul01m020-f175.google.com[209.85.214.175]: 554 5.7.1 Service unavailable; Client host [209.85.214.175] blocked using bl.spamcop.net; Blocked - see http://www.spamcop.net/bl.shtml?209.85.214.175; from=u...@gmail.com to=u...@example.com proto=ESMTP helo=mail-tul01m020-f175.google.com From: http://spamcop.net/fom-serve/cache/291.html How do I configure my mailserver to reject mail based on the blocklist? We recommend that when using any spam filtering method, users be given access to the filtered mail - don't block the mail as documented here, but store it in a separate mailbox. Or tag it and provide users documentation so that they can filter based on the tags in their own MUA. We provide this information only for administrators who cannot use a more subtle approach for whatever reason. In other words, maybe it's best to not use bl.spamcop.net for outright rejections at smtp time. Alternatively, you can change the reply code for this dnsbl or all your dnsbls to a 4xx so the sending host can get the mail delivering to you once the dnslbl stops listing the world. See: http://www.postfix.org/postconf.5.html#reject_rbl_client -- Stan
Re: Spamcop listed gmail?
On Mon, 16 Jan 2012 14:12:48 -0500, Robert Fitzpatrick wrote: Jan 16 13:52:25 mx1 postfix/smtpd[72538]: NOQUEUE: reject: RCPT from mail-tul01m020-f175.google.com[209.85.214.175]: 554 5.7.1 Service unavailable; Client host [209.85.214.175] blocked using bl.spamcop.net; Blocked - see http://www.spamcop.net/bl.shtml?209.85.214.175; from=u...@gmail.com to=u...@example.com proto=ESMTP helo=mail-tul01m020-f175.google.com thats why dnswl exists ? http://moensted.dk/spam/?addr=209.85.214.175Submit=Submit -- dash dash space
Re: Spamcop listed gmail?
On Mon, 16 Jan 2012 13:28:34 -0600, Stan Hoeppner wrote: the mail delivering to you once the dnslbl stops listing the world. See: http://www.postfix.org/postconf.5.html#reject_rbl_client http://www.postfix.org/postconf.5.html#permit_dnswl_client http://www.dnswl.org/tech#postfix
Re: Spamcop listed gmail?
On 1/16/2012 2:34 PM, Benny Pedersen wrote: On Mon, 16 Jan 2012 13:28:34 -0600, Stan Hoeppner wrote: the mail delivering to you once the dnslbl stops listing the world. See: http://www.postfix.org/postconf.5.html#reject_rbl_client http://www.postfix.org/postconf.5.html#permit_dnswl_client http://www.dnswl.org/tech#postfix Given the amount of leakage out of Gorilla mailers, especially Google and especially Google Groups, why would you use dnswl to accept every message from their outbounds, given they have a trustworthiness score of 1? IMHO this is the only sane default setting: permit_dnswl_client list.dnswl.org=127.0.[2..14].[2..3] which doesn't automatically allow Google originating email into the queue, nor Yahoo, nor AOL, etc. No, permit_dnswl_client isn't the right solution for the OP in this case. -- Stan
Re: Spamcop listed gmail?
Am 16.01.2012 22:22, schrieb Stan Hoeppner: On 1/16/2012 2:34 PM, Benny Pedersen wrote: On Mon, 16 Jan 2012 13:28:34 -0600, Stan Hoeppner wrote: the mail delivering to you once the dnslbl stops listing the world. See: http://www.postfix.org/postconf.5.html#reject_rbl_client http://www.postfix.org/postconf.5.html#permit_dnswl_client http://www.dnswl.org/tech#postfix Given the amount of leakage out of Gorilla mailers, especially Google and especially Google Groups naturally big players like google, yahoo... have a big amount of mails each day and 1% of a big amount is a hughe number - that does not classify them as spammer if you send only 1000 messages each day and 900 of them are spam you have a lower total count as google but percentual 90% junk signature.asc Description: OpenPGP digital signature
Re: Spamcop listed gmail?
On Mon, 16 Jan 2012 15:22:41 -0600, Stan Hoeppner wrote: No, permit_dnswl_client isn't the right solution for the OP in this case. its a free world :-) yep sure one could skip dnsbl from freemail domains if wanted that way
Re: Spamcop listed gmail?
On 01/17/2012 07:17 AM, Reindl Harald wrote: naturally big players like google, yahoo... have a big amount of mails each day and 1% of a big amount is a hughe number - that does not classify them as spammer if you send only 1000 messages each day and 900 of them are spam you have a lower total count as google but percentual 90% junk Still they are ignorant and I report daily about one of their mails to spamcop. I tried contacting their abuse@, I tried to contact listowner etc but I still receive mailing list I never asked for. And this is their problem if they do not report spam reports either. And please, if anyone from Google reads, remove that annoying shiitenews coming to me. Tõnu
Re: Spamcop listed gmail?
Am 16.01.2012 20:12, schrieb Robert Fitzpatrick: Perhaps this is not the place for this, I didn't find a mailing list on the spamcop site and just looking to see if this is experienced by others. Got two calls this morning, both not receiving mail from gmail users and both being blocked by my usage of 'reject_rbl_client bl.spamcop.net'. Anyone other users of this config parameter seeing this? Jan 16 13:52:25 mx1 postfix/smtpd[72538]: NOQUEUE: reject: RCPT from mail-tul01m020-f175.google.com[209.85.214.175]: 554 5.7.1 Service unavailable; Client host [209.85.214.175] blocked using bl.spamcop.net; Blocked - see http://www.spamcop.net/bl.shtml?209.85.214.175; from=u...@gmail.com to=u...@example.com proto=ESMTP helo=mail-tul01m020-f175.google.com -- Robert rob...@webtent.org why do you use spamcop ? -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
