1 Topic by kromcuich (edited by kromcuich 2011-10-14 23:05:45)

  • kromcuich
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Topic: Mail policy errors

==== Provide basic information to help troubleshoot ====
- iRedMail version: 0.7.0
- Linux/BSD distribution name and version: Debian 5

As of a few weeks ago, the mail server began rejecting all mail connection on first attempt, stating unknown email addresses - even though they have mailed this server many times before. This causes a bounce back in some cases.

Oct  5 05:43:42 cen postfix/smtpd[12661]: NOQUEUE: reject: RCPT from mail-bw0-f54.google.com[209.85.214.54]: 450 4.7.1 <user1@mydomain>: Recipient address rejected: Policy Rejection- Please try later.; from=<dmitri@externaldomain> to=<user1@mydomain> proto=ESMTP helo=<mail-bw0-f54.google.com>
Oct  5 05:43:42 cen postfix/smtpd[12661]: disconnect from mail-bw0-f54.google.com[209.85.214.54]
Oct  5 05:46:05 cen postfix/smtpd[12720]: connect from pool-108-18-244-16.washdc.fios.verizon.net[108.18.244.16]

And then I also have this strange error, does it relate to mail folder ownership ?

Oct  5 05:46:06 cen postfix/smtpd[12720]: NOQUEUE: reject: RCPT from pool-108-18-244-16.washdc.fios.verizon.net[108.18.244.16]: 553 5.7.1 <user2@mydomain>: Sender address rejected: not owned by user user1@mydomain; from=<user2@mydomain> to=<user2@mydomain> proto=ESMTP helo=<[192.168.1.2]>

thanks for your help

krom

----

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
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Re: Mail policy errors

Recipient address rejected: Policy Rejection- Please try later.

This is greylisting, it's normal.

<user2@mydomain>: Sender address rejected: not owned by user reneexia@example.org;

Your client use one mail address (reneexia@example.org) as username for SMTP auth, but specify another email address (user2@mydomain) in "From:" field.
You can solve this issue by removing "reject_sender_login_mismatch" in Postfix config file  main.cf, or change your mail client setting to use same address for SMTP auth and "From:" field.

3 Reply by kromcuich

  • kromcuich
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Re: Mail policy errors

ZhangHuangbin wrote:

Recipient address rejected: Policy Rejection- Please try later.

This is greylisting, it's normal.

Ok, but senders are receiving a bounceback ('to retry later') from the mail system and are under the impression that the email address doesnt work. IT didnt happen before, only recently. The other point is that the sender's domain should have already been whitelisted as they have sent lots of email before. Where can I see and perhaps edit the authorised domains myself?

thanks

Krom==== Provide basic information to help troubleshoot ====
- iRedMail version:
- Linux/BSD distribution name and version:
- Any related log? Log is helpful for troubleshooting.
====

4 Reply by kromcuich

  • kromcuich
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Re: Mail policy errors

ZhangHuangbin wrote:

reject_sender_login_mismatch

Will this make the server an open relay?

Krom

5 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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Re: Mail policy errors

kromcuich wrote:

Will this make the server an open relay?

No.