Fold in the #40715 blank-env OOM fix on top of the host-resolution change:
- connect() now sets a non-retryable fatal error when required settings are
missing, so the gateway stops reconnecting against an empty host instead of
looping forever and leaking memory until the host OOM-kills.
- check_email_requirements() treats blank/whitespace-only EMAIL_* values as
missing, so an abandoned setup with empty keys no longer enables the platform.
Credits the parallel fixes by zerone0x (#40745) and liuhao1024 (#40829).
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