1 Topic by derek.ho

  • derek.ho
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  • Registered: 2019-12-16
  • Posts: 2

Topic: Cannot receive mail due to "550 Too many MIME part: 129 > 100"

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.9
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version: Ubuntu 18.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySql
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
A mail cannot be received because too many MIME parts such as image exists in the mail body.
Error message as below:
   "host XXXX said: 550 Too many MIME parts 129 > 100" (in reply to end of DATA command).

How to configure it to accept more MIME parts?  Please help us in this issue. Thanks alot.

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Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
  • iRedMail Developers
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  • Registered: 2009-05-06
  • Posts: 31,090

Re: Cannot receive mail due to "550 Too many MIME part: 129 > 100"

You can try to increase Postfix parameter "mime_nesting_limit":
http://www.postfix.org/postconf.5.html# … ting_limit

Question is, why does the email contain so many MIME parts?

3 Reply by derek.ho

  • derek.ho
  • Member
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  • Registered: 2019-12-16
  • Posts: 2

Re: Cannot receive mail due to "550 Too many MIME part: 129 > 100"

It is because mail content has so many screenshots and images in the signature section.
I will try to increase this parameter. Thanks for your help.