Re: [qmailtoaster] Re: SPAM Designation Option
Lack of rDNS records will cause messages to fail to MSN/Hotmail, and Yahoo! accounts (don't know about Gmail)... I'm not at all worried about the blocking of messages (the SPAM he doesn't see he won't bitch about)... he just didn't like the ***SPAM*** label behavior! BTW: I warned him that there would be an increase in SPAM -- we'll see how long it takes him to decide to turn SA back on! Dan On 5/3/2011 1:58 PM, Michael J. Colvin wrote: This is true, however a LARGE amount of spam is sent from IP's with no RDNS. By not blocking those e-mails, you're certainly forcing your mail server to deal with a MUCH larger amount of mail, most of which would be spam. I guess if you don't have a resource issue, and don't mind wasting resources on handling spam, that may or may not be rejected by SpamAssassin down the road, then that's fine. I agree that, if the customer wants the spam, I'm more than happy to let them have it. However, I won't do it at the detriment of other users. If you've never had a "Spam Attack", where your server is constantly bombarded by spammers, then when you do, you'll wish you had SpamDyke. :-) When your server (Or the OP's server) is being hammered by a spammer, and comes here to complain about how his server is overloaded and legit e-mail is timing out because all of his SMTP ports are being bogarted, the first suggestion is going to be "Are you running SpamDyke". And, yes... When a client is not getting e-mail because the sender's mail server (Usually an internal Exchange server) does not have an RDNS, I tell them that's why. I even have a form e-mail I send them to send the blocked person. I've actually picked up several consulting gigs (Fixing their RDNS issue) and spam filtering customers from this... Lack of RDNS is becoming a much more common antispam check. So, if you're blocking it, others are also likely blocking it, and, in the end, the offending server's admin is going to have to resolve the issue... Mike -Original Message- From: Peter Peltonen [mailto:peter.pelto...@gmail.com] Sent: Tuesday, May 03, 2011 10:38 AM To: qmailtoaster-list@qmailtoaster.com Subject: Re: [qmailtoaster] Re: SPAM Designation Option Hi, On Tue, May 3, 2011 at 7:31 PM, Eric Shubert wrote: that. Spamdyke false positives are practically nonexistent though, so you might want to just leave spamdyke active and not tell him about it. Then again, if he insists on receiving spam, I'd charge him extra for the load it'll cause on your server as well as the trouble of configuring spamdyke. ;) Even if Spamdyke is correct, it does not mean that the end behaviour is what the customer expects. I have ran into issues where customers haven't received email they were expecting because of Spamdyke rejecting a message because of missing reserve dns. And it does not help telling the customer that the sending server is not properly configured, if they can receive the same email with their Gmail or some other account... I have been playing around with an idea that I should create a page for each customer where they could check the sending addresses for denied messages. So if there is a "real" message denied I could then offer an option to white list that mail server or sending address, so that the customer could try contacting the sender again. Best, Peter - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.
RE: [qmailtoaster] Re: SPAM Designation Option
This is true, however a LARGE amount of spam is sent from IP's with no RDNS. By not blocking those e-mails, you're certainly forcing your mail server to deal with a MUCH larger amount of mail, most of which would be spam. I guess if you don't have a resource issue, and don't mind wasting resources on handling spam, that may or may not be rejected by SpamAssassin down the road, then that's fine. I agree that, if the customer wants the spam, I'm more than happy to let them have it. However, I won't do it at the detriment of other users. If you've never had a "Spam Attack", where your server is constantly bombarded by spammers, then when you do, you'll wish you had SpamDyke. :-) When your server (Or the OP's server) is being hammered by a spammer, and comes here to complain about how his server is overloaded and legit e-mail is timing out because all of his SMTP ports are being bogarted, the first suggestion is going to be "Are you running SpamDyke". And, yes... When a client is not getting e-mail because the sender's mail server (Usually an internal Exchange server) does not have an RDNS, I tell them that's why. I even have a form e-mail I send them to send the blocked person. I've actually picked up several consulting gigs (Fixing their RDNS issue) and spam filtering customers from this... Lack of RDNS is becoming a much more common antispam check. So, if you're blocking it, others are also likely blocking it, and, in the end, the offending server's admin is going to have to resolve the issue... Mike -Original Message- From: Peter Peltonen [mailto:peter.pelto...@gmail.com] Sent: Tuesday, May 03, 2011 10:38 AM To: qmailtoaster-list@qmailtoaster.com Subject: Re: [qmailtoaster] Re: SPAM Designation Option Hi, On Tue, May 3, 2011 at 7:31 PM, Eric Shubert wrote: > that. Spamdyke false positives are practically nonexistent though, so you > might want to just leave spamdyke active and not tell him about it. Then > again, if he insists on receiving spam, I'd charge him extra for the load > it'll cause on your server as well as the trouble of configuring spamdyke. > ;) Even if Spamdyke is correct, it does not mean that the end behaviour is what the customer expects. I have ran into issues where customers haven't received email they were expecting because of Spamdyke rejecting a message because of missing reserve dns. And it does not help telling the customer that the sending server is not properly configured, if they can receive the same email with their Gmail or some other account... I have been playing around with an idea that I should create a page for each customer where they could check the sending addresses for denied messages. So if there is a "real" message denied I could then offer an option to white list that mail server or sending address, so that the customer could try contacting the sender again. Best, Peter - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
RE: [qmailtoaster] Re: SPAM Designation Option
I hear ya. I just ran into this yesterday as well. What I did to correct the issue was to add the email address to the /etc/spamdyke/whitelist_recipients file. The recipients mail server was an exchange server(yuck bad word) but it used postini to screen their spam. The rDNS resolved back to postini and not what they had in their dns records. I finally just gave up trying to explain it and found I could add the address to the spamdyke whitelist. Solved It for me. And that way you not whitelisting and entire domain that could be a spammer. Hope that helps. _ From: Peter Peltonen [mailto:peter.pelto...@gmail.com] Sent: Tuesday, May 03, 2011 12:38 PM To: qmailtoaster-list@qmailtoaster.com Subject: Re: [qmailtoaster] Re: SPAM Designation Option Hi, On Tue, May 3, 2011 at 7:31 PM, Eric Shubert wrote: > that. Spamdyke false positives are practically nonexistent though, so you > might want to just leave spamdyke active and not tell him about it. Then > again, if he insists on receiving spam, I'd charge him extra for the load > it'll cause on your server as well as the trouble of configuring spamdyke. > ;) Even if Spamdyke is correct, it does not mean that the end behaviour is what the customer expects. I have ran into issues where customers haven't received email they were expecting because of Spamdyke rejecting a message because of missing reserve dns. And it does not help telling the customer that the sending server is not properly configured, if they can receive the same email with their Gmail or some other account... I have been playing around with an idea that I should create a page for each customer where they could check the sending addresses for denied messages. So if there is a "real" message denied I could then offer an option to white list that mail server or sending address, so that the customer could try contacting the sender again. Best, Peter - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com _ No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1209 / Virus Database: 1500/3612 - Release Date: 05/03/11
Re: [qmailtoaster] Re: SPAM Designation Option
Hi, On Tue, May 3, 2011 at 7:31 PM, Eric Shubert wrote: > that. Spamdyke false positives are practically nonexistent though, so you > might want to just leave spamdyke active and not tell him about it. Then > again, if he insists on receiving spam, I'd charge him extra for the load > it'll cause on your server as well as the trouble of configuring spamdyke. > ;) Even if Spamdyke is correct, it does not mean that the end behaviour is what the customer expects. I have ran into issues where customers haven't received email they were expecting because of Spamdyke rejecting a message because of missing reserve dns. And it does not help telling the customer that the sending server is not properly configured, if they can receive the same email with their Gmail or some other account... I have been playing around with an idea that I should create a page for each customer where they could check the sending addresses for denied messages. So if there is a "real" message denied I could then offer an option to white list that mail server or sending address, so that the customer could try contacting the sender again. Best, Peter - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
RE: [qmailtoaster] Re: SPAM Designation Option
I agree with Eric on the Spamdyke portion. I was thinking the same thing, but didn't have an answer for the SpamAssassin portion, so I didn't reply! :-) I run SpamDyke more for the benefit of my server. The benefit for the client is secondary. If you disable it, your certainly going to increase the load on your server, requiring, at some point, you to either upgrade your server, or add another to handle the load. I'd second Eric's suggestion to simply not tell your client about SpamDyke and leave it in place, or charge the client more to cover the extra spam/mail your server is sure to get. Mike -Original Message- From: Eric Shubert [mailto:e...@shubes.net] Sent: Tuesday, May 03, 2011 9:32 AM To: qmailtoaster-list@qmailtoaster.com Subject: [qmailtoaster] Re: SPAM Designation Option On 05/03/2011 09:07 AM, Dan McAllister wrote: > Greetings QMail list... > > I am in the unenviable position of admitting that some of my QMail is FM > to me (FM is "f***ing magic" or, in plainer terms "I know it works, > I just don't know how") -- and that has me in a bit of a quandary > > I host web & e-mail for some of my clients and I have a NEW customer, > who has asked me to turn off the SpamAssassin "***SPAM***" insert in the > subject line... in fact, he wants to turn off ALL SPAM blocking for his > domain. > > So, how / where do I configure SpamAssassin (and SpamDyke, for that > matter) to NOT process messages for his domain? > > Thanks in advance, > > Dan McAllister > For SA, add a record to the beginning of /var/qmail/control/simcontrol: customdomain.com:clam=yes,spam=no then run "service qmail cdb". Per-domain control in spamdyke is a little tricky. See spamdyke docs for that. Spamdyke false positives are practically nonexistent though, so you might want to just leave spamdyke active and not tell him about it. Then again, if he insists on receiving spam, I'd charge him extra for the load it'll cause on your server as well as the trouble of configuring spamdyke. ;) -- -Eric 'shubes' - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
