[GH-ISSUE #1307] Postscreen NOQUEUE: reject GMAIL #1056

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opened 2026-02-27 11:14:59 +03:00 by kerem · 2 comments

kerem commented

2026-02-27 11:14:59 +03:00

Owner

Originally created by @blackyzero on GitHub (Nov 22, 2017).
Original GitHub issue: https://github.com/modoboa/modoboa/issues/1307

Impacted versions

Modoboa: 1.9.1
installer used: Yes
Webserver: Nginx

Steps to reproduce

Gmail sent to email domain hosted on Modoboa mail server

Current behavior

Email unable to deliver to Modoboa mail server, mail.log shows error,
Nov 22 16:03:56 siren postfix/postscreen[8266]: NOQUEUE: reject: RCPT from [209.85.160.43]:45612: 450 4.3.2 Service currently unavailable; from=account@gmail.com, to=user@abc.com, proto=ESMTP, helo=<mail-pl0-f43.google.com>

Expected behavior

whitelist all popular mail domains, spam filter should be smarter.

In addition, i have tried to comment following options in /etc/postfix/main.cf

postscreen_dnsbl_sites =
##       zen.spamhaus.org=127.0.0.[2..11]*3
##      b.barracudacentral.org=127.0.0.[2..11]*2
##       zen.spamhaus.org*3
##       bl.spameatingmonkey.net*2
##       dnsbl.habl.org
##       bl.spamcop.net
##       dnsbl.sorbs.net

And all mails from Gmail can be delivered to Modoboa mailbox. This means no spam domain filter features are enabled.

Please advice how to fix this issue.
Thank you very much.

Video/Screenshot link (optional)

Originally created by @blackyzero on GitHub (Nov 22, 2017). Original GitHub issue: https://github.com/modoboa/modoboa/issues/1307 # Impacted versions * Modoboa: 1.9.1 * installer used: Yes * Webserver: Nginx # Steps to reproduce Gmail sent to email domain hosted on Modoboa mail server # Current behavior Email unable to deliver to Modoboa mail server, mail.log shows error, Nov 22 16:03:56 siren postfix/postscreen[8266]: NOQUEUE: reject: RCPT from [209.85.160.43]:45612: 450 4.3.2 Service currently unavailable; from=<account@gmail.com>, to=<user@abc.com>, proto=ESMTP, helo=<mail-pl0-f43.google.com> # Expected behavior whitelist all popular mail domains, spam filter should be smarter. In addition, i have tried to comment following options in /etc/postfix/main.cf ``` postscreen_dnsbl_sites = ## zen.spamhaus.org=127.0.0.[2..11]*3 ## b.barracudacentral.org=127.0.0.[2..11]*2 ## zen.spamhaus.org*3 ## bl.spameatingmonkey.net*2 ## dnsbl.habl.org ## bl.spamcop.net ## dnsbl.sorbs.net ``` And all mails from Gmail can be delivered to Modoboa mailbox. This means no spam domain filter features are enabled. Please advice how to fix this issue. Thank you very much. # Video/Screenshot link (optional)

kerem closed this issue

2026-02-27 11:14:59 +03:00

kerem commented

2026-02-27 11:15:00 +03:00

Author

Owner

@blackyzero commented on GitHub (Nov 23, 2017):

additional info, i have increased 2G ram for Linode VPS, still monitoring at the end day to see how much improved.

@blackyzero commented on GitHub (Nov 23, 2017): additional info, i have increased 2G ram for Linode VPS, still monitoring at the end day to see how much improved.

kerem commented

2026-02-27 11:15:00 +03:00

Author

Owner

@tonioo commented on GitHub (Nov 23, 2017):

I think postwhite is a better solution. There is an opened issue already (https://github.com/modoboa/modoboa-installer/issues/109), I think I'll propose it through the sponsoring system.

@tonioo commented on GitHub (Nov 23, 2017): I think postwhite is a better solution. There is an opened issue already (https://github.com/modoboa/modoboa-installer/issues/109), I think I'll propose it through the sponsoring system.

kerem referenced this issue

2026-02-27 11:20:54 +03:00

[PR #1056] [MERGED] Use local thread storage. #2105