Issue: https://github.com/php/php-src/issues/10164
Author: AllenJB
### Description
For the past few months at least, messages I've sent to mailing lists (php-general) have been
bouncing (after some time) with DNS fetch errors.
I'm experiencing no other email related issues and have checked everything I can think of in my
side, but the issues persist.
The last bounce I received, on the 23rd Dec, for a message sent on 16th Dec, contained the following
error message:
```
Hi. This is the qmail-send program at lists.php.net.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<php-general@lists.php.net>:
ezmlm-send: fatal: error fetching DNS record for allenjb.me.uk: temporary failure
I'm not going to try again; this message has been in the queue too long.
```
All messages are sent from my domain, allenjb.me.uk, hosted on Fastmail.
I am happy to forward a full copy of a bounce message on request.
### PHP Version
n/a
### Operating System
n/a