mailmap size limit

bb_dns

New Member
Hi, It seems that the mail forwarding service has a size limit of about 20mb, as I am getting incoming mail bounced by mail.zoneedit.com. Is there a stated limit somewhere, I wasn't able to find it. Is it possible to increase the limit using credits? Thank you!
 

sandy

Administrator
Staff member
there is a 25MB limit including all headers as well.
and sorry, iti s a global setting and cannot be modified.

regards.
 

bb_dns

New Member
Thank you very much! It's interesting, I thought the limit was lower. Gmail also has a $25mb limit, yet the same large email was rejected by zoneedit while it was accepted by gmail.
 

sandy

Administrator
Staff member
hi again... by chance do you have a copy of the returned message headers?

regards.
 

bb_dns

New Member
The original message was received at Wed, 12 Aug 2020 09:56:57 -0400
from m0132171.ppops.net [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<xxx@xxx.com>
(reason: 552 5.3.4 Message size exceeds fixed limit)

----- Transcript of session follows -----
... while talking to mx-caprica.zoneedit.com.:
>>> MAIL From:<s...@.....edu> SIZE=31363700
<<< 552 5.3.4 Message size exceeds fixed limit
554 5.0.0 Service unavailable

The mystery part is that the same email message went through fine when sent to a gmail account. The attachment size is shown as 22mb (23,213,469 bytes to be precise). Thank you for looking into this!
 

sandy

Administrator
Staff member
there is additional header data when a message is forwarded compared to sending straight on to an intended recipient.

regards
 
Top