ventura 3.5 mail not sending if body is empty

After upgrade to Ventura 3.5 mail sending does not work if body of email is empty.

i normally use “subject only” emails to test things after an upgrade. It took me a full day to realize that it actually DOES work but only if body is non-empty.

On MacBook Air M1.

A fellow tweaker found the same issue also on Ventura 13.5

I found the relevant logging via connection dokter:

logging snippet WITH body:

————————————————

WROTE Aug 07 11:58:12.920 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x6000003b5680 -- thread:0x60000386b980

AUTH PLAIN (*** 80 bytes hidden ***)

READ Aug 07 11:58:12.939 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x6000003b5680 -- thread:0x60000386b980

235 2.7.0 Authentication successful

WROTE Aug 07 11:58:12.939 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x6000003b5680 -- thread:0x60000386b980

MAIL FROM:<stefan@xxxxxxxxx.nl>

---> and it keeps running

logging snippet WITHOUT body:

——————————————————.

WROTE Aug 07 12:05:51.260 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x60000036e280 -- thread:0x600003f3db40

AUTH PLAIN (*** 80 bytes hidden ***)

READ Aug 07 12:05:51.284 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x60000036e280 -- thread:0x600003f3db40

235 2.7.0 Authentication successful

WROTE Aug 07 12:05:51.284 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:xxxxxxxxx.nl -- port:587 -- socket:0x60000036e280 -- thread:0x600003f3db40

QUIT

--> and than it stops.