[mailop] Merry Christmas from Google?

2023-12-16 Thread Jarland Donnell via mailop
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

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Benny Pedersen via mailop
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

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Bill Cole via mailop
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. >>

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Thomas Walter via mailop
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)

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread ml+mailop--- via mailop
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,

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Richard via mailop
> > 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

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Thomas Walter via mailop
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

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread ml+mailop--- via mailop
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

Re: [mailop] Hotmail complains about their own mail

2023-12-16 Thread Carsten Schiefner via mailop
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

[mailop] Hotmail complains about their own mail

2023-12-16 Thread 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 about the bounce message to our abuse. I'm not sure how to react to that. Would it be