AOL 421 DYN:T1 Errors

Discussion in 'Mail Chat' started by darrenc77, Nov 19, 2013.

  1. darrenc77

    darrenc77 New Member

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    I have multiple /24's from different networks and all of them have good rep with AOL. All of a sudden yesterday, all of my ranges saw a huge spike in DYN:T1 errors.

    I have these errors pop up all the time within a few ip's in my ranges, but never this widespread and on all of my ranges at once and on about 80% of the ip's in my /24's. I could understand this happening if it was my ranges within a specific network...but since this happened suddenly over multiple networks has me scratching my head.

    Did anyone else see this happen starting yesterday? What do you suggest I do to get rid of these errors? I've paused mailing on a few of the ranges for 24 hours, which did not seem to help.

    I currently pause T1 errors for 15 minutes and then try again. How long do you suggest I pause this error for?
     
  2. darrenc77

    darrenc77 New Member

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    Around 2:00pm PT.
     
  3. darrenc77

    darrenc77 New Member

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    Yeah, it's really strange. The errors are popping up so much on my ranges since yesterday that AOL is just allowing email to drip in. I've changed my back off time for the T1 error from 15 mins to 2 hours to see if that will help over time.
     
  4. darrenc77

    darrenc77 New Member

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    Now all of a sudden I'm seeing 421 (DNS:NR) errors. Weird thing is, when I check my IP's using AOL's rDNS tool, everything shows up great. Talked with my IP provider and they are saying everything is good.
     
  5. rwnutra

    rwnutra VIP

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    AOL has certainly been throwing more 421 DYNT1s the past few days. Plus these fun ones...

    554 RTR:GE and my Fav...

    421 RFC Ignorant expecting 354 and I got 250 not correct, maybe its me but I am blaming it on them***8207;
     
  6. aklayman

    aklayman VIP

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    Seeing the same thing here.
    Also checked everything and the RDNS of my ips are fine.
     
  7. DaMadHatter

    DaMadHatter Active Member

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    The only time I have seen it happen like you're describing is when you're at the sending ceiling/cap for the day.

    How much volume are you sending?
     
  8. darrenc77

    darrenc77 New Member

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    I'm sending out roughly 50k messages per day per /24 (some ranges more some less). I have done this for years and have never had these TI errors this widespread. I've always had the occasional DYN:T1 show up, but nothing like this. I send out roughly 4k emails per hour per /24.

    I've always backed off DYN:T1 errors for 15 mins and then try again. This has always worked great with this type of error. Today I changed this to 2 hours on these errors to see if this will help.
     
  9. ecurtbeth

    ecurtbeth New Member

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    Please am new to mailing, can some one put me through on some of the stuff it entails and what to do. please
     
  10. arbydar

    arbydar VIP

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    Sounds like you're asking for a free mentor bro
     
  11. Daansen

    Daansen Member

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    From my experience dyn:t1 blocks disappear for the short time after 3-4 hours of pausing, and for the more long time period after 8-12 hours of pausing, and after 24 hours of pausing even for the longer periods. I didn't experiment longer. I just see that they are appearing on the different IP's of the same range intermittently - today on the one bunch of IP's, tomorrow on another. And I did not notice any spike in the last days.
     
  12. DaMadHatter

    DaMadHatter Active Member

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    With that volume, very odd indeed.
     

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