Increase permitted size of *received* messages?

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Increase permitted size of *received* messages?

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DS212J, DS214play, DS216, DS216play, DS414, DS918+, RS816
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  2. MR2200ac
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Mail Server appears to be enforcing a maximum size of messages I can receive. A sender sending me a large message (I can't determine how big it must be to cause a problem) gets " 552 5.3.4 Message size exceeds fixed limit " in their bounce message from Mail Server.

Is there a way to increase the size limit?
 

fredbert

Moderator
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Synology Mail Server -> SMTP: Maximum size per email (MB)

I set mine to 15MB as that's the maximum of my email service provider.
 
323
123
NAS
DS212J, DS214play, DS216, DS216play, DS414, DS918+, RS816
Router
  1. RT2600ac
  2. MR2200ac
Operating system
  1. Windows
Mobile operating system
  1. iOS
But isn't that the maximum size you can SEND? I'm referring to the maximum size I can RECEIVE.
 

Shadow

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DS216+II, DS118, DS718+
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  1. RT2600ac
  2. MR2200ac
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But isn't that the maximum size you can SEND? I'm referring to the maximum size I can RECEIVE.

It applies to both.

Some mail servers are even more stricter on the maximum size of received messages.
 

fredbert

Moderator
NAS Support
Subscriber
1,623
674
NAS
DS1520+, DS218+, DS215j
Router
  1. RT2600ac
  2. MR2200ac
Operating system
  1. macOS
Mobile operating system
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SMTP is for both sending and receiving mail. IMAP and POP are the mailboxes on the receiving server.

On the SMTP page it says "Enable SMTP to deliver and receive mails." So I'm thinking the size is for both.
 
323
123
NAS
DS212J, DS214play, DS216, DS216play, DS414, DS918+, RS816
Router
  1. RT2600ac
  2. MR2200ac
Operating system
  1. Windows
Mobile operating system
  1. iOS
Good point, @fredbert. I've tried it; will let you know the results. :)
 
323
123
NAS
DS212J, DS214play, DS216, DS216play, DS414, DS918+, RS816
Router
  1. RT2600ac
  2. MR2200ac
Operating system
  1. Windows
Mobile operating system
  1. iOS
Confirmed: Works. :)
 

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