How do you actually diagnose deliverability problems when something goes wrong?

I manage email for a handful of clients and diagnosing deliverability is the part that still takes me the longest.

It almost always comes down to sitting with the data manually — complaint rates, bounce composition, DNS records, send history — and building a picture from pieces that don't talk to each other. It works but it's slow, and the insight often comes too late (after two or three bad sends, not before the first one).

A few things I'm genuinely uncertain about and would love to hear how others handle:

- Do you tend to catch problems proactively, or almost always reactively after a bad campaign?

- How much of your diagnosis relies on what the ESP surfaces vs. tools vs. external checks like Postmaster or MXToolbox?

- If you've tried any dedicated deliverability tools (GlockApps seems to come up a lot), what's actually useful vs. noise?

Not looking to sell anything — genuinely trying to understand whether the manual-analysis approach I'm using is standard, or whether there are smarter workflows I'm missing.

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u/familiar_stranger_7 — 10 days ago

How do you actually diagnose deliverability problems when something goes wrong?

Curious how people here handle this in practice — not the theory, but what you actually do when a campaign underperforms and you're trying to figure out why.

I've been helping a few senders work through deliverability issues, and it almost always comes down to sitting with the data manually — complaint rates, bounce composition, DNS records, send history — and building a picture from pieces that don't talk to each other. It works but it's slow, and the insight often comes too late (after two or three bad sends, not before the first one).

A few things I'm genuinely uncertain about and would love to hear how others handle:

- Do you tend to catch problems proactively, or almost always reactively after a bad campaign?

- How much of your diagnosis relies on what the ESP surfaces vs. tools vs. external checks like Postmaster or MXToolbox?

- If you've tried any dedicated deliverability tools (GlockApps seems to come up a lot), what's actually useful vs. noise?

Not looking to sell anything — genuinely trying to understand whether the manual-analysis approach I'm using is standard, or whether there are smarter workflows I'm missing.

reddit.com
u/familiar_stranger_7 — 10 days ago

How has the experience been of the people/couples who are CF and currently in their 40s and above?

Hi. I'd love to actually get some perspective from the people who are near or above 40, from the POV of their individual self and, if, them being part of marriage/relationship and being CF, or if anyone here knows such people and how their life as a CF person/couple has been so far?

​

To any such person here, I'm sure the journey of being CF and owning it up must have not been easy and you have my respect for it. I'd be delighted to know your perspective on how you and, if, your partner, have navigated this, been firm on your decision, and are happy today to take that decision? I myself have decided to be CF, but very new in this journey too, and would like to have some perspective on navigating this.

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u/familiar_stranger_7 — 14 days ago

How helpful has the 3 day course been to resume after a long time and get you in the flow?

It's been quite long since I practiced it properly and I'm increasingly realising it's important for me to resume, but I'm not getting it right either.

​

I'm sure many must have found themselves in this situation. Has a 3-day course helped you in getting it right again and come back in flow? Because I'm thinking of attending one to get in flow again.

reddit.com
u/familiar_stranger_7 — 25 days ago

How to resume after a long break?

Hi everyone. So I'm sure there must be people here who have successfully been able to resume Vipassana after a long break. I understand consistency is the key, but technically what challenges have you faced? And what have you done to overcome them?

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u/familiar_stranger_7 — 1 month ago

Curious how you all are thinking of dealing with the emotional cost of being child free

Don't get me wrong, I (33M) got married about an year ago and due to many reasons, I was always a sceptic of having kids and my partner is even more averse of bearing kids and I respect her decision. We have a cat and kind of leaving a DINK life and intend to do so too.

But what I have always worried and wondered and trying to figure out this reality too. As far as I understand and seen people around me, sadly people don't think a lot before having kids, kinda default for them, and often parents make their life a largely about and around the kids. Kids give them and their life a purpose, a motivation. I'm sure a lot of people here must have seen this around them, and this often becomes the narrative to have kids for irresponsible people sometimes sadly, like have kids and you'll get direction in life, utter nonsense I think.

Not denying people often do raise kids so that one day those kids can be their emotional and physical support, and selfish as it is, there's nothing wrong as long as the upbringing has been good. I've seen my parents do a lot for me (as I'm sure many of you too also must have), seen them working hard in life for us, and although I had to leave my career to serve my ailing father, I have no regrets for it cos I was there for him when he passed away. Since then I'm a huge emotional support for my mother and she has often said what would she have done had I not been there for her.

But I also see people who have found a better/greater purpose and decide to dedicate their life on it and not for family/kids. Industrialists like Kiran Mazumder Shaw, Nikhil Kamat, and many others are there who work for a bigger purpose and make that as their brain child. My partner works in social sector and she too is driven by this feeling and it works for her. Having such a purpose, be it kids or something else you're working towards gives meaning to life and has been proven in research to improve the quality of life too. I don't personally share that bigger purpose, at least not now.

This then forces me to think on two fronts for people, like me, who decide not to have kids:

  1. For someone who doesn't feel or hasn't recognised that purpose, what do you think drives you or gives you that purpose, assuming they are not kids?

  2. Someday we all are going to get to a point in life when we will need emotional support. Often we attribute that to our partner (as have I), but do you think, that's enogh because we must face the reality of life, separation, disease or health condition, loneliness, death of a partner, I mean all the situations where someone typically depends on their children for emotional support. What can be the replacement for kids in such a situation? Community of like minded people? Social work? Loads of money that won't cause other problems (saying cos I've heard people say this logic).

TLDR- How do you guys think we can replace the emotional value that children provide to many people in their life?

reddit.com
u/familiar_stranger_7 — 1 month ago

Why warming multiple IPs to Microsoft at once triggers Spamhaus CSS — and what actually works

Recently came across an interesting case where someone was warming a pool of 14 dedicated IPs for Microsoft transactional traffic — all authentication perfect, complaint rates clean, sending rates conservative at 4 msg/min per IP. Everything looked right on paper, yet several IPs started getting listed on Spamhaus CSS and Microsoft began blocking them entirely.

Microsoft giving the S767/S843 warning is basically saying add more IPs and spread the load. Sounds logical — more pipes, more throughput. But Microsoft and Spamhaus see it differently.

When multiple brand-new IPs suddenly appear sending to the same domains at the same time, it looks like snowshoe spamming — a technique where spammers distribute volume across many IPs specifically to avoid per-IP rate limits. Spamhaus CSS (Composite Snowshoe Spam) exists to catch exactly this pattern, and it doesn't care that your content is legitimate transactional billing mail. It's just seeing the pattern and flagging it.

The fix isn't about msg/min rates — 4 msg/min per IP is already conservative. The problem is the pattern: too many new IPs, same destination, same timeframe. What works better is warming one or two IPs fully over 3-4 weeks before introducing the next pair. Staggering introductions by at least two weeks. Letting each IP build its own independent reputation history with Microsoft before the next one appears.

I'll be uploading a deeper dive blog post on it on my website soon. But curious if anyone else has observed this pattern before? If yes, how have you dealt with it?

reddit.com
u/familiar_stranger_7 — 2 months ago

Why warming multiple IPs to Microsoft at once triggers Spamhaus CSS — and what actually works

Recently came across an interesting case where someone was warming a pool of 14 dedicated IPs for Microsoft transactional traffic — all authentication perfect, complaint rates clean, sending rates conservative at 4 msg/min per IP. Everything looked right on paper, yet several IPs started getting listed on Spamhaus CSS and Microsoft began blocking them entirely.

Microsoft giving the S767/S843 warning is basically saying add more IPs and spread the load. Sounds logical — more pipes, more throughput. But Microsoft and Spamhaus see it differently.

When multiple brand-new IPs suddenly appear sending to the same domains at the same time, it looks like snowshoe spamming — a technique where spammers distribute volume across many IPs specifically to avoid per-IP rate limits. Spamhaus CSS (Comvined Spam Sources) exists to catch exactly this pattern, and it doesn't care that your content is legitimate transactional billing mail. It's just seeing the pattern and flagging it.

The fix isn't about msg/min rates — 4 msg/min per IP is already conservative. The problem is the pattern: too many new IPs, same destination, same timeframe. What works better is warming one or two IPs fully over 3-4 weeks before introducing the next pair. Staggering introductions by at least two weeks. Letting each IP build its own independent reputation history with Microsoft before the next one appears.

I'll be uploading a deeper dive blog post on it on my website soon. But curious if anyone else has observed this pattern before? If yes, how have you dealt with it?

reddit.com
u/familiar_stranger_7 — 2 months ago
▲ 92 r/lucknow

I was near Chowk around 6:30 p.m. or so when I saw this mesmerizing view. The sun almost setting, perfectly placed between the buildings, like one of those new york sunsetting photos (except here there were e-rickshaws and people peeking pan around), but I don't think I have ever seen the sun so big and it looked surreal. Unfortunately didn't have a good camera then, so just clicked a make-do photo, but sharing what I managed to click.

u/familiar_stranger_7 — 2 months ago
▲ 11 r/lucknow

It's almost 9 a.m. early may, but seems like it's almost 7 p.m. late September. The weather patterns in last few years have been weird, but this!? I'm just wondering how it's really going to affect the crop yields, things are going to become expensive now!

(Typing this while having chai, cos why not! 😅)

reddit.com
u/familiar_stranger_7 — 2 months ago

I'm guessing most of us understand that 99% "delivered" is just the starting and doesn't mean a lot.

But here's the problem — "delivered" just means the receiving server accepted the message. It has no idea whether it went to inbox, spam, or quietly got buried. We've always known this, but we've kind of just... lived with it.

That's about to change because of a new authentication protocol called DKIM2, and ESPs will implement it soon!

Here's the part that matters for you:

Right now, if Gmail accepts your email and then decides it's spam, it either dumps it in the spam folder or silently drops it. It can't bounce it back to you because email addresses get forged all the time — a delayed bounce could end up harassing a completely innocent third party. So providers just eat it.

DKIM2 fixes the technical problem that caused this. And the implication, according to the authors, is that mailbox providers will now be able to bounce mail back to your ESP up to 24 hours after delivery — including mail that already hit the spam folder.

Er, what it means? It means if your campaign goes out. 99% delivered, but Gmail decided overnight that around 4% (hypothetical) were spam, so that 99% is now 95%. And unlike a regular bounce, this one is Gmail telling you directly: we don't want this.

Why does this matter now?

Laura Atkins (Word to the Wise, one of the most respected voices in deliverability) just posted about this after Deliverability Summit in Barcelona last week. Her take: it's moving faster than even she expected. Working code exists. Major mailbox providers could deploy this by end of 2026.

Full post here if you want the technical breakdown: https://www.wordtothewise.com/2026/04/dkim2-what-it-means-for-the-future-of-email

What do you actually need to do?

Honestly? Right now, nothing. DKIM2 reuses your existing DKIM keys — no DNS changes needed on your end. The heavy lifting is on your ESP.

But here's what's worth watching: when your ESP announces DKIM2 support, that's when the delayed bounce data starts flowing. And that data is going to expose a lot of senders who thought they were doing fine.

The people who are going to get blindsided are the ones optimising for delivered rate without caring about what happens after delivery. If your list hygiene is poor, if your content is borderline, if you've been getting away with it — this is the mechanism that starts surfacing that.

How do you think it might impact your campaigns and what changes will come from your respective ESP?

u/familiar_stranger_7 — 2 months ago