Re: [spamdyke-users] Moving from GreyLite
Gary and Sam, Thanks for the useful info! I have SpamDyke running now with the simple conf and will start looking at the options. I have some white black lists to import to . . BTW, it appears top-posting is OK here? Regards, Phil. On 2015-06-20 05:52, Sam Clippinger via spamdyke-users wrote: I'm not familiar with GreyLite at all, but connection-time means spamdyke does its work while the message is still coming into your mail server -- while the connection with the sending server is active. This is as opposed to filtering messages in the mail queue, after the remote server is no longer connected (and believes the message has been delivered). The advantage of a connection-time filter is the remote server sees the rejection and the spam is never stored on your server at all. Rejecting messages after they've been queued requires either sending a bounce message or delivering it to a user's Junk folder. This distinction comes up a lot around qmail regarding recipient validation. By itself, qmail does not validate recipients when messages are accepted. Any username at a valid domain is accepted, then bounced later if the address turns out to be invalid. This leads to the problem of backscatter spam -- spammers deliberately send messages to invalid addresses and set the from address to their intended target. A qmail server will bounce the message (complete with spam or virus) to the victim. For qmail to validate recipients at connection time requires a patch or a filter like spamdyke. -- Sam Clippinger On Jun 19, 2015, at 5:21 AM, Philip Rhoades via spamdyke-users spamdyke-users@spamdyke.org wrote: People, I have been using GreyLite for many years but it hasn't been supported for quite a while - I think it is time to update to SpamDyke . . but I have some questions - first one: I looked at the SpamDyke web site and it is still not clear to me - it says 'connection-time means spamdyke evaluates and rejects spam while the remote server is still delivering it' - does this mean it does it at the TCP / mail envelope level? ie so it would be the same as GreyLite? GL blocks and forces possibly bad mails to be resent some time later which many spammers don't attempt . . Thanks, Phil. -- Philip Rhoades PO Box 896 Cowra NSW 2794 Australia E-mail: p...@pricom.com.au ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users -- Philip Rhoades PO Box 896 Cowra NSW 2794 Australia E-mail: p...@pricom.com.au ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users
Re: [spamdyke-users] Moving from GreyLite
Phil, The greylisting feature of Spamdyke kicks in after whitelisting and blacklisting operations. If these operations don't specifically reject or accept the incoming email then it is chosen for greylisting. I suggest you scan it's features from the spamdyke homepage. It sounds like it is a GreyLite replacement since it uses the connection information to determine whether to greylist. There has been multiple discussions on whether greylisting is a good or bad spam filter. In my case, I turned it off because sometimes registration confirmations aren't resent at all, are sent too late so they get caught in the greylist again, or they finally come through after they've expired. I had to be proactive in these cases and whitelist that domain before I register. For the small percentage of spam rejections over my other spamdyke filter settings, I decided it wasn't worth the hassle of false positive delays. Gary On 06/19/2015 06:21 AM, Philip Rhoades via spamdyke-users wrote: People, I have been using GreyLite for many years but it hasn't been supported for quite a while - I think it is time to update to SpamDyke . . but I have some questions - first one: I looked at the SpamDyke web site and it is still not clear to me - it says 'connection-time means spamdyke evaluates and rejects spam while the remote server is still delivering it' - does this mean it does it at the TCP / mail envelope level? ie so it would be the same as GreyLite? GL blocks and forces possibly bad mails to be resent some time later which many spammers don't attempt . . Thanks, Phil. smime.p7s Description: S/MIME Cryptographic Signature ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users
[spamdyke-users] Moving from GreyLite
People, I have been using GreyLite for many years but it hasn't been supported for quite a while - I think it is time to update to SpamDyke . . but I have some questions - first one: I looked at the SpamDyke web site and it is still not clear to me - it says 'connection-time means spamdyke evaluates and rejects spam while the remote server is still delivering it' - does this mean it does it at the TCP / mail envelope level? ie so it would be the same as GreyLite? GL blocks and forces possibly bad mails to be resent some time later which many spammers don't attempt . . Thanks, Phil. -- Philip Rhoades PO Box 896 Cowra NSW 2794 Australia E-mail: p...@pricom.com.au ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users
Re: [spamdyke-users] Moving from GreyLite
I'm not familiar with GreyLite at all, but connection-time means spamdyke does its work while the message is still coming into your mail server -- while the connection with the sending server is active. This is as opposed to filtering messages in the mail queue, after the remote server is no longer connected (and believes the message has been delivered). The advantage of a connection-time filter is the remote server sees the rejection and the spam is never stored on your server at all. Rejecting messages after they've been queued requires either sending a bounce message or delivering it to a user's Junk folder. This distinction comes up a lot around qmail regarding recipient validation. By itself, qmail does not validate recipients when messages are accepted. Any username at a valid domain is accepted, then bounced later if the address turns out to be invalid. This leads to the problem of backscatter spam -- spammers deliberately send messages to invalid addresses and set the from address to their intended target. A qmail server will bounce the message (complete with spam or virus) to the victim. For qmail to validate recipients at connection time requires a patch or a filter like spamdyke. -- Sam Clippinger On Jun 19, 2015, at 5:21 AM, Philip Rhoades via spamdyke-users spamdyke-users@spamdyke.org wrote: People, I have been using GreyLite for many years but it hasn't been supported for quite a while - I think it is time to update to SpamDyke . . but I have some questions - first one: I looked at the SpamDyke web site and it is still not clear to me - it says 'connection-time means spamdyke evaluates and rejects spam while the remote server is still delivering it' - does this mean it does it at the TCP / mail envelope level? ie so it would be the same as GreyLite? GL blocks and forces possibly bad mails to be resent some time later which many spammers don't attempt . . Thanks, Phil. -- Philip Rhoades PO Box 896 Cowra NSW 2794 Australia E-mail: p...@pricom.com.au ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users ___ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users
