Dnia 8.01.2026 o godz. 11:55:00 Brandon Long via mailop pisze: > > These rules are constantly being monitored, updated and added to in > response to updated spammer tactics. > > None of this is unique to Google, any major spam target either does this > themselves or outsources it to a third party antispam provider. [...] > I haven't been on the Gmail team in quite a while now, and so I have no > particular insight into the specific rules involved here. You can > look at postmaster.google.com for information about the reputation of your > domains... but that only helps if there is "enough" information > available (ie, high enough authenticated volume from a particular domain). > I know one historical way that "low reputation" has been used > incorrectly is for low volume or low nonspam volume or "unknown" domains. > Reputation heavily favors recency. All of these things also > update in real time, so truly no spam evaluation is ever the same. > > There have been extensive discussions on here about how some of these > things affect low volume senders and why based on our experience > with compromised hosts sending spam. Low volume also makes it hard to find > good senders in bad neighborhoods. This is the real issue with > the modern large scale email ecosystem, while it doesn't require you to be > one of the major providers, there is a relatively high bar for volume to > create the signal necessary for modern antispam systems to have good > discrimination. > > The end result is that spam rejections can seem very arbitrary and > capricious. In the large, false positives are low... but the rate will > always appear > high for any rejections on low volume domains.
From my very recent experience, I can confirm something actually changed at Google, although nobody knows if it is for good or just temporary. If you look into the list archives, you can find out that since serveral years I have been struggling with the problem of all messages sent from my domain (rafa.eu.org) being filed by Google into spam folder. About a year ago or so, Gmail changed the behavior to outright reject my messages with the infamous message "Gmail has detected that this message is likely unsolicited mail." The last time I tried to send mail to Gmail was in November, and it still was the case. This was somehow better in the aspect that I at least knew that my messages aren't getting through, but it was no better with regard to the fact that they didn't get through anyway. I stopped to complain about this because it made no sense; there was absolutely no chance to have someone from Google make something about this (which I HATE btw - my opinion is that even the largest mail provider, counting messages in billions, should be able to accommodate for even smallest sender who sends one message per week to them - because that's how email is supposed to work; we, as mail admins, are supposed to cooperate. If somebody can't, they should hire more staff. If they cannot afford to hire more staff, they should quit doing what they do and move to another business. Period.). Just now after reading your mail I tried to send mail to a test Gmail account I made long ago for this purpose (I haven't mailed it for about a year), and this time the message was accepted and wasn't even routed to spam, it appeared properly in the inbox. However, there's no reason to celebrate ;) as this already happened several times previously and then things quickly returned to sad "normality" - ie. either rejecting my messages or sending them to spam. So if you mention rejection rate above... for me it was 100% for long time. And this while no spam was ever sent from this domain. -- Regards, Jaroslaw Rafa [email protected] -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
