Hey friends,
I just noticed that on November 22nd, Google started returning new
errors:
421-4.7.28 Gmail has detected an unusual rate of unsolicited mail
originating from your SPF domain [userdomain.tld 15]. To protect our
users from spam, mail sent from your domain has been temporarily
Thomas Walter via mailop skrev den 2023-12-16 19:56:
Dec 15 20:46:06 speedy postfix/smtpd[64567]: ACC2D1FF9B:
client=mail-westus2azolkn19012032.outbound.protection.outlook.com[52.103.10.32]
Dec 15 20:46:06 speedy postfix/cleanup[64616]: ACC2D1FF9B:
message-id=
Dec 15 20:46:08 speedy
On 2023-12-16 at 11:31:18 UTC-0500 (Sat, 16 Dec 2023 17:31:18 +0100)
Thomas Walter via mailop
is rumored to have said:
> On 16.12.23 12:11, ml+mailop--- via mailop wrote:
>> On Sat, Dec 16, 2023, Thomas Walter via mailop wrote:
>>
>>> 2. Our server bounces with 550 5.1.1 User doesn't exist.
>>
Hello Richard,
On 16.12.23 18:12, Richard via mailop wrote:
Your approach is generating backscatter spam (to hotmail, where the
mail may not even have originated - the "From:" address is likely
forged so your assumption that it originated from hotmail could well
be wrong), which (being polite)
On Sat, Dec 16, 2023, Thomas Walter via mailop wrote:
> I still think Microsoft should not complain about NDRs, especially if the
> original was from them.
That's probably just the normal case of filtering mail when it is
coming in, but not when it is going out (that's what those companies
do,
>
> It's a catchall forwarded domain "@olddomain -> @newdomain", so
> Postfix accepted it before checking the final recipient.
>
> Now that you said it, I'm going to suggest to the user to just
> alias individual addresses instead of the catchall.
>
> I still think Microsoft should not
On 16.12.23 12:11, ml+mailop--- via mailop wrote:
On Sat, Dec 16, 2023, Thomas Walter via mailop wrote:
2. Our server bounces with 550 5.1.1 User doesn't exist.
Does your server generate a DSN?
If the "User doesn't exist" then it seems you should be able to
determine that fact when RCPT is
On Sat, Dec 16, 2023, Thomas Walter via mailop wrote:
> 2. Our server bounces with 550 5.1.1 User doesn't exist.
Does your server generate a DSN?
If the "User doesn't exist" then it seems you should be able to
determine that fact when RCPT is given -- or is this just a bogus
reply?
--
Please
Hi Thomas,
> Am 16.12.2023 um 10:34 schrieb Thomas Walter via mailop :
>
> Hey guys,
>
> this was new:
>
> 1. Hotmail user sends delivery service phishing email.
> 2. Our server bounces with 550 5.1.1 User doesn't exist.
> 3. User marks non-delivery mail as Junk?
> 4. Hotmail sends complaint
Hey guys,
this was new:
1. Hotmail user sends delivery service phishing email.
2. Our server bounces with 550 5.1.1 User doesn't exist.
3. User marks non-delivery mail as Junk?
4. Hotmail sends complaint about the bounce message to our abuse.
I'm not sure how to react to that.
Would it be
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