#1
  1. No Profile Picture
    Super Moderator
    Devshed Intermediate (1500 - 1999 posts)

    Join Date
    Jun 2009
    Location
    Hartford, WI
    Posts
    1,554
    Rep Power
    112

    E-mail hanging in queue


    Wow. I am just making a list of topics on my own. :-/

    Well, I guess the basic is letters hanging in SMTP and not sending. If the message is sent from an internal connection w/o AUTH, it is successful. If the message is sent from client software, StartTLS or such grants them privilege and the letter arrives in the SMTP queue, however, never sends. It appears to just sit in the queue. I know the quote kinda gives a heads up, but why would that only apply to a sent item from a remote computer, but not a local outbound?
    Our system has detected that this message is 421-4.7.0 suspicious due to the very low reputation of the sending IP address. 421-4.7.0 To protect our users from spam, mail sent from your IP address has 421-4.7.0 been temporarily rate limited.
    mail.log clip: http://projects.hellzoneinc.com/devs...ail-980898.txt

    Wouldn't the whole fact the user's client must log in to send kinda avoid this?
    Last edited by Triple_Nothing; July 31st, 2018 at 09:10 PM.
    He who knows not that he knows not is a fool, ignore him. He who knows that he knows not is ignorant, teach him. He who knows not that he knows is asleep, awaken him. He who knows that he knows is a leader, follow him.
  2. #2
  3. Impoverished Moderator
    Devshed Supreme Being (6500+ posts)

    Join Date
    Mar 2007
    Location
    Washington, USA
    Posts
    16,885
    Rep Power
    9646
    So the queue is running, it's just that messages aren't sending quickly because you're being rate limited?

    The internet doesn't know about your mail server. The servers out there don't necessarily trust you. Doesn't matter how your users authenticated (which they wouldn't even know about in the first place), as far as they know you're a spammer.

    The best first step you can take is set up SPF and DKIM. They will indicate that your mail server is trusted when it comes to sending for your domain.
  4. #3
  5. No Profile Picture
    Grumpier old Moderator
    Devshed Supreme Being (6500+ posts)

    Join Date
    Jun 2003
    Posts
    14,560
    Rep Power
    4550
    If you have root shell access, maybe postfix's postqueue or postsuper utilities can help identify the problem.
    ======
    Doug G
    ======
    I've never been able to appreciate the sublime arrogance of folks who feel they were put on earth just to save other folks from themselves .." - Donald Hamilton
  6. #4
  7. No Profile Picture
    Super Moderator
    Devshed Intermediate (1500 - 1999 posts)

    Join Date
    Jun 2009
    Location
    Hartford, WI
    Posts
    1,554
    Rep Power
    112
    Well, at least the issue wasn't truly on my side. Once I got home from work, I noticed all went through. SPF/DKIM was planned due to alerts/notes in DNS checks/tests, but just being delayed. It all works, so troubleshooting is done. The only thing I'm a bit off with in my head is why a letter sent front the server's console has been successfully sent/accepted right away, but a letter sent from client software has been delayed. Used the same from/to addresses. No issue, tho. Thanks for any comments.
    Last edited by Triple_Nothing; July 31st, 2018 at 09:08 PM.
    He who knows not that he knows not is a fool, ignore him. He who knows that he knows not is ignorant, teach him. He who knows not that he knows is asleep, awaken him. He who knows that he knows is a leader, follow him.
  8. #5
  9. Impoverished Moderator
    Devshed Supreme Being (6500+ posts)

    Join Date
    Mar 2007
    Location
    Washington, USA
    Posts
    16,885
    Rep Power
    9646
    Because of rate limiting. If you send one email, it'll probably go through fine. If you send 10 emails in a minute, the first might go through but the 10th might not.

    Comments on this post

    • Triple_Nothing agrees : Ah, rate-based. Makes sense. Thx. ;)

IMN logo majestic logo threadwatch logo seochat tools logo