When I retired, I switched email servers from
UCSD.EDU to my own
domain, and mail from me was occasionally marked as spam by gmail.
That gradually stopped. But mail from me as brian(a)ampr.org that
was NOT in reply to a message I'd received was FREQUENTLY marked
as spam by gmail. Now, a year later, that is rare. I believe this
shows that Google is constantly adjusting its spam filtering
mechanism, and that some part of that adjustment is automated.
Microsoft's email service (with all the names it goes by) has a
reputation of occasionally just discarding inbound mail with no
notification to either the sender or the recipient. I have proven
this with certain email contents such as long lists of IP addresses
in the body of the message; the message just vanishes. Attachments
seem to be better tolerated, gzip'd or bzip'd attachments seem to
get through most of the time.
Throwing the baby out with the bathwater seems to be tolerable to
customers of these services. Or it could be they don't know what
they're missing; ignorance can be bliss.
In any case, that's why I run my own mail server instead of using
gmail; if something goes wrong, I know who to blame and can usually
figure out how to fix it.
- Brian
On Mon, Nov 12, 2018 at 11:05:11PM +0100, Rob Janssen wrote:
The subject
line of this message is clearly wrong.
255 of the 821 subscribers to this mailing list
use @gmail.com
mailboxes.
If there were a problem with gmail, it would have
shown up long
ago.
I have a bit mixed feelings about it. As a coordinator I get regular mail
from gmail users and often experience that my replies do not arrive or get
marked as SPAM. I get reminders about requests that I have already processed,
and sometimes a message "oh sorry I found your reply in the SPAM folder".
At first I blamed my use of an @amsat.org address, and also using that address
as a From: address in my replies. Due to the SPF record on
amsat.org it can be
expected that such use leads to marking of mail as suspicious.
So I switched to using another alias service (@vrza.nl being offered by one of
our amateur radio societies), but the situation did not improve. I still get
reports of my mail ending up in the SPAM folder at gmail. But the vrza.nl
domain has no SPF record.
Apparently there is some relation to the user receiving the mail. Some users
receive all my mail without problem, no matter if sent from @amsat.org @vrza.nl
or another source. Others report that it is treated as SPAM for each of those.
Not being a
gmail.com user myself, I do not exactly know what features it offers
for whitelisting or other special treatment of mail, or maybe what it learns
automatically. It could be that sending back and forth several mails eventually
leads to an address getting on the whitelist automatically. The same could be
true for mail server IP addresses (like a mailinglist server), and it could be
that knowledge built in the past also affects the results of new SPAM criteria
added later.
It is all a bit opaque, and when you want reliable and predictable mail service,
using those mailservices certainly is not the best choice... or at the least
check the SPAM folder regularly. (but I have also received reports of mail
being dropped and not placed there)
Rob
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net