Re: [mailop] Thread-Index header too long

2022-10-17 Thread Heiko Schlittermann via mailop
Grant, thanks for your fast response. Grant Taylor via mailop (Di 18 Okt 2022 00:41:24 CEST): > I would (try to) configure my MTA to re-wrap the logical line to conform to … Modification of existing headers isn't something I would recommend. Except for headers that aren't protected by DKIM. >

[mailop] Apple contact for strange email

2022-10-17 Thread Alexander Huynh via mailop
Hello, I've been seeing a few mail connection attempts from Apple's IP space, which I've been rejecting due to mismatched A / and PTR records (see sample log at the end, times UTC). Is there anyone at Apple who can contact me off list? Thanks, -- Alex Oct 10 11:39:35 H=[17.240.49.6

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Grant Taylor via mailop
On 10/17/22 10:17 PM, Brandon Long via mailop wrote: Right, but you can't stick a non-compliant message into a DSN directly and have that be a compliant message... so you either make the non-compliant message compliant when you stick it into the DSN, or you figure that a sender who sends a non-

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Brandon Long via mailop
On Mon, Oct 17, 2022 at 9:07 PM Grant Taylor via mailop wrote: > On 10/17/22 9:11 PM, Brandon Long via mailop wrote: > > Certainly, but do you consider some edge cases like composing bounces > > or relaying messages as generating messages? > > Yes, generating a DSN is generation of a message. No

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Grant Taylor via mailop
On 10/17/22 9:11 PM, Brandon Long via mailop wrote: Certainly, but do you consider some edge cases like composing bounces or relaying messages as generating messages? Yes, generating a DSN is generation of a message. No, /relaying/ is not generating a message. I'm using "did the outgoing me

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Brandon Long via mailop
On Mon, Oct 17, 2022 at 7:49 PM Grant Taylor via mailop wrote: > On 10/17/22 8:35 PM, Brandon Long via mailop wrote: > > The line length limit was clearly designed for a different time in > > terms of memory usage, and I think a lot of mail software has much > > larger workarounds for specific cl

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Grant Taylor via mailop
On 10/17/22 8:35 PM, Brandon Long via mailop wrote: The line length limit was clearly designed for a different time in terms of memory usage, and I think a lot of mail software has much larger workarounds for specific client/server bugs... I'd just raise the limit. I'd be okay with raising t

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Brandon Long via mailop
Rewriting messages which are poorly formatted can have downstream effects on DKIM signatures, so you have to weigh the consequences for your environment. The line length limit was clearly designed for a different time in terms of memory usage, and I think a lot of mail software has much larger wor

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Grant Taylor via mailop
On 10/17/22 4:02 PM, Heiko Schlittermann via mailop wrote: Hi, Hi, how do you deal whith incoming messages having a Thread-Index header ... with about 1200 chars. I can't say as I've had the (dis)pleasure of dealing with such. I would (try to) configure my MTA to re-wrap the logical line t

Re: [mailop] Thread-Index header too long

2022-10-17 Thread Heiko Schlittermann via mailop
Heiko Schlittermann (Di 18 Okt 2022 00:02:00 CEST): > Hi, > > (crossposting from exim-user mailing list, but I think, this isn't > specific to Exim) > > how do you deal whith incoming messages having a Thread-Index header (an > other header indicates that the originating MUA was MS Outlook 16.0)

[mailop] Thread-Index header too long

2022-10-17 Thread Heiko Schlittermann via mailop
Hi, (crossposting from exim-user mailing list, but I think, this isn't specific to Exim) how do you deal whith incoming messages having a Thread-Index header (an other header indicates that the originating MUA was MS Outlook 16.0) with about 1200 chars. The regular Exim config doesn't forward th

[mailop] [Bulgarian ISPs] - How to reach as no response given so far

2022-10-17 Thread Carlota Iglesias Martinez via mailop
Hi there, Hope you are well. One of my clients has been experiencing an extremely low ORs on Bulgarian ISPs for months (mail.bg and abv.bg) which makes me believe that some filtering is in place. I have tried to contact them multiple times through the contact email addresses I have found onlin