XenForo Email sending error - broken pipe

[gldtn]

I just started getting this error, on a new server

Code:

ErrorException: [E_NOTICE] fwrite(): Write of 62 bytes failed with errno=32 Broken pipe src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:223

Generated by: Unknown account Oct 1, 2023 at 10:20

Stack Trace
Code:

#0 [internal function]: XF::handlePhpError(8, '[E_NOTICE] fwri...', '/var/www/teonan...', 223)
#1 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(223): fwrite(Resource id #196...

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