Sysadmin Where to start, or end, AmazonSES

I've no idea where to go on this, mainly as I've been at an upgrade all day.
This morning I was on 5.6.27 IIRC and IPS forum 3.4.6 after much testing on other servers running 4.1+ and php 7 I pulled the plug and upgraded... yay.

After a few minutes emails started to error, no real status codes, IPS kind of strips that. I've got SES configured to send via TLS SMTP. The only thing that I believe to have changed is the version of PHP and the code to send the smtp mail. Problem is it hurts the users experience a lot.

Anyone else using SES and php 7.1.15?

I've temporarily lashed it into sparkpost ( although sent, few are delivered, shared ip pool )

I'm going to wind it back to 5.6.# and see if it continues... any other ideas, google hasn't yielded anything constructive on the .15 release.

---

Thanks to centminmod changing the php version isn't that scary or difficult. Almost easier than enterprise litespeed

 

It all went well except for a png error as I didn't have the imagemagick php lib installed. Passed the initial test too.

The only thing I didn't test on test as the ability to ping loads of updates to followers/forum following. Something is a miss; as amazon hasn't skipped a beat and no failures reported by amazon. Time to yank the php book from under my printer and get grokking.

I'll update if /when I find it

 

In essence yes. I've re-applied the settings; just in case, and no difference. Smtp error code is either the message id ( I think hex string ) or 0.
Point it to sparkpost api and it fires fine. I don't have another smtp provider to shake test... that or php version, but given it works on another site on php7 I'm inclined to think something else is afoot. Sleep will probably cure it.

 

Same box as this morning. But worth a sanity check...

This is purely for daily/notification mails. I stopped sending 'newsletters' with IPB, took too long. On my todo list to reinvigorate.

 

It was a working account in the morning, upgraded site and then php... no changes to server, csf or credentials, just code and php; not much then & definitely more than one, kind of broke my own rules there for a day .

Another centmin box running 4.1.17 on php 7.1.15 is working although with a different domain. Slightly fresher eyes today. Will make a new IAM, just in case, then begin reversing and comparing.