How to check attachment issue

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1

Hi , my current kumomta cfg seems doesn’t work well with attachment, it seems stucked after send 1st mail, i got smtpdataerroe on client side, any clue where i can start to check the issue,
Thanks in advance

3

Paste your configuration and error log here

4

Also read the READ ME FIRST and follow it.

5

Hi sorry for the delay, I got this error from client side: (500, b’5.2.3 line too long’) , but no error found from kumo log

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