Knowledgebase: Inbound Mail Flow
'552 5.3.4 Message size exceeds fixed maximum message’ even though Email size is less than max receive size
Posted by Muhammad Ahmed, Last modified by David Szoke on 17 June 2019 03:19 PM

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Help System URL:  https://help.proofpoint.com/Proofpoint_Essentials/Administrator_Topics/110_logs/'552_5.3.4_Message_size_exceeds_fixed_maximum_message%E2%80%99_even_though_Email_size_is_less_than_max_receive_size

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