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XF 1.2 Email Issues

Discussion in 'Troubleshooting and Problems' started by daudet, Oct 30, 2013.

  1. daudet

    daudet Member

    I am seeing this in my mail logs.

    Oct 30 03:12:29 fido postfix/smtp[28137]: A12BB8CBB9: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28136]: 09F698CBC5: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28134]: 848FD8CBC1: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28141]: 8DA828CBBD: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28143]: 726B48CBCF: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28138]: 9EEBB8CBA9: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:29 fido postfix/smtp[28140]: D9D4B8CBBB: host cdptpa-smtpin01.mail.rr.com[75.180.132.243] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP
    Oct 30 03:12:31 fido postfix/smtp[28137]: A12BB8CBB9: to=<bmeuron@cfl.rr.com>, relay=cdptpa-smtpin02.mail.rr.com[75.180.132.244]:25, delay=8791, delays=8787/0.04/4.1/0, dsn=4.7.1, status=deferred (host cdptpa-smtpin02.mail.rr.com[75.180.132.244] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP)
    Oct 30 03:12:32 fido postfix/smtp[28136]: 09F698CBC5: to=<knicholson@carolina.rr.com>, relay=cdptpa-smtpin02.mail.rr.com[75.180.132.244]:25, delay=8789, delays=8785/0.03/4.2/0, dsn=4.7.1, status=deferred (host cdptpa-smtpin02.mail.rr.com[75.180.132.244] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP)
    Oct 30 03:12:32 fido postfix/smtp[28141]: 8DA828CBBD: to=<msantarelli@roadrunner.com>, relay=cdptpa-smtpin02.mail.rr.com[75.180.132.244]:25, delay=8790, delays=8786/0.06/4.1/0, dsn=4.7.1, status=deferred (host cdptpa-smtpin02.mail.rr.com[75.180.132.244] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP)

    Oct 30 03:12:32 fido postfix/smtp[28140]: D9D4B8CBBB: to=<simon101@roadrunner.com>, relay=cdptpa-smtpin02.mail.rr.com[75.180.132.244]:25, delay=8785, delays=8781/0.06/4.2/0, dsn=4.7.1, status=deferred (host cdptpa-smtpin02.mail.rr.com[75.180.132.244] refused to talk to me: 421 4.7.1 - Connection refused - <50.116.38.38> - Too many concurrent connections from source IP)


    I believe it is because it is trying to send too many emails in too short of a span of time. Is there any way to put a pause in?

    --Dan
     
  2. Amaury

    Amaury Well-Known Member

    It looks like it may be an issue with your host or server.

    Try contacting your host and see what's up.
     
  3. Jeremy

    Jeremy XenForo Moderator Staff Member

    Your SMTP server appears to be rejecting connections due to too many being active at the same time. You'll need to talk to your host to determine if there is a script consistently sending emails or contact your email provider to help diagnose the problem.
     
    Amaury likes this.
  4. daudet

    daudet Member

    I am the host. It is a virtual server. This message is being sent back. It is hitting multiple forum members who have the same internet provider.

    If you look at the message, it is coming from....
    75.180.132.243

    My host and smtp service is
    50.116.38.38

    eth0 Link encap:Ethernet HWaddr F2:3C:91:AE:45:80
    inet addr:50.116.38.38 Bcast:50.116.38.255 Mask:255.255.255.0
    inet6 addr: 2600:3c02::f03c:91ff:feae:4580/64 Scope:Global
    inet6 addr: fe80::f03c:91ff:feae:4580/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:32257481 errors:0 dropped:0 overruns:0 frame:0
    TX packets:25039000 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:5415445797 (5.0 GiB) TX bytes:39603836335 (36.8 GiB)
    Interrupt:76

    I need something that will cause the emails to forum members to pause in between sends. This should cause the receiving end to understand that it is not being attacked.

    --Dan
     
  5. daudet

    daudet Member

    I forgot to include this...

    Too many concurrent connections from source IP

    I am the source!

    --Dan
     
  6. Amaury

    Amaury Well-Known Member

    Okay, so when did this start happening?
     
  7. Jeremy

    Jeremy XenForo Moderator Staff Member

    If you are the host and have access, you'll need to tune the settings on your server for the amount of emails your site requires sending.
     
  8. daudet

    daudet Member

    I started noticing this about 1 week ago but believe it has happened before. The issue also caused me to get black-listed. I have taken measures to rectify that.

    Does anyone know how to tune email from a LINUX perspective?

    --Dan
     
  9. Mike

    Mike XenForo Developer Staff Member

  10. Tracy Perry

    Tracy Perry Well-Known Member

    Here ya' go.
    found via Google at http://www.hsc.fr/ressources/cours/postfix/doc/rate.html#destination
    and another one http://steam.io/2013/04/01/postfix-rate-limiting/

    The second one has some REALLY good information. Tells how to even set it so that it throttles for certain domains to run even slower than default using /etc/postfix/transport file to define domains.
     
    daudet likes this.
  11. daudet

    daudet Member

    Wow Tracy! That is an excellent reply!

    --Dan
     
  12. daudet

    daudet Member

    If I reduce the number for default_destination_concurrency_limit

    Will this keep me from flooding the remote destinations and help with the issue that I have experienced?
    If 10 is the default, I was thinking of maybe something like 2 or 3.

    --Dan
     
  13. Tracy Perry

    Tracy Perry Well-Known Member

    The second link gives you the most detailed information. I think he used the example for main.cf of smtp_destination_concurrency_limit = 2.
     
  14. Brogan

    Brogan XenForo Moderator Staff Member

    If you require help with a specific issue, please start a new thread detailing the problem rather than just posting on multiple existing threads in this manner.
     

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