With the GWIA from GroupWise Version 14.2.1 HP1 it is impossible to publish the maximum allow message size to the public.
Neither a SMTP communication with 250-SIZE nor the returning SMTP Error 552 message includes the currently configured maximum allow message size.
All the mail systems i know, including online mail services, are able to this by default.

Example GWIA SMTP communication today:
<snip begin>
telnet your.host.tld 25
220 your.host.tld Ready
ehlo dummy
250-your.host.tld
250-AUTH LOGIN
250-8BITMIME
250-SIZE
250 DSN
quit
221 your.host.tld Closing transmission channel
<snip end>

In the future
"250-SIZE"
should look like
"250-SIZE 31457280"
if 30MB is the maximum allow message size !!

Example GWIA SMTP Error 552 message today:
<snip begin>
This message was created automatically by the SMTP relay on your.host.tld.

A message that you sent could not be delivered to all of its recipients.
The following address(es) failed:

address@your.host.tld
SMTP error from remote mail server after RCPT TO:<helpdesk@nat.eu>:
host your.host.tld [0.0.0.0]: 552 Message exceeds maximum allowable message size
<snip end>

In the future
"host your.host.tld [0.0.0.0]: 552 Message exceeds maximum allowable message size"
should look like
"host your.host.tld [0.0.0.0]: 552 Message exceeds maximum allowable message size 31457280"
if 30MB is the maximum allow message size !!

Another solution for this could be to make it possible to customize the gwia message text for an smtp error code like "552".
This could open the general possibility to have custom gwia message texts for any smtp error code.

by: NAT A. | over a year ago | Agents