Re: [mailop] Trouble sending to sympatico.ca
It appears that Suresh Ramasubramanian via mailop said: >Why is it deferred when you get a 554? Because that's the response on the initial connection, not to a message. Here's what I get when I connect from my house: Connected to mx.sympatico.ca. 554 Invalid DNS PTR resource record for 64.246.232.221 Connection closed by foreign host. (It's right, there's no PTR on my IP.) This has nothing to do with anything about any individual message, since it never sees an individual message. Anyone who's guessing about problems with the messages, bad guess. I see in another message that the client in question is at Linode, so my guess is that they block all connections from Linode. I don't blame them, since the vast majority of mail I've seen from Linode hosts is spam. R's, John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
On 2022-07-31 at 13:07:43 UTC-0400 (Sun, 31 Jul 2022 12:07:43 -0500) John Gateley via mailop is rumored to have said: On 7/31/22 11:38 AM, Michael Rathbun via mailop wrote: Since you have included none of the information that might have been used by the receiving system (your IP? Your HELO string? The domain in the envelope? Any domains referenced in the body?) ... Fair point: The sending domain is annbauer.com, mx is hosted by mx.oustrencats.com. IP addresses: root@giraffe:~# host mx.oustrencats.com mx.oustrencats.com has address 50.116.29.164 mx.oustrencats.com has IPv6 address 2600:3c00:e000:323::1 I am not positive on the HELO string, as postfix isn't logging that, but I would guess it is mx.oustrencats.com with envelope from x...@annbauer.com I would bet that with the error message you cited, there was no HELO or envelope sender, because the *connection* was refused. Again, DKIM, SPF, DMARC and reverse DNS are set up properly enough to get mail delivered to google. Google does what Google does. Sympatico clearly does elsewise. Their servers, their rules. My guess is that Sympatico got tired of seeing misbehaving Linode IPs in their logs and you're just collateral damage. Not sure what you mean about domains referenced in the body, someone contacted my wife and she was replying. Some spam filters (e.g. SpamAssassin) parse any URIs out of message bodies and score based on the reputation of their domains. Likely not relevant in this case, especially since there was probably no SMTP traffic sent at all. -- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
On Sun, 31 Jul 2022 12:07:43 -0500, John Gateley via mailop wrote: >The sending domain is annbauer.com, mx is hosted by mx.oustrencats.com. > >IP addresses: > >root@giraffe:~# host mx.oustrencats.com >mx.oustrencats.com has address 50.116.29.164 Look clean as far as publicly accessible reputation lists are concerned. >Not sure what you mean about domains referenced in the body, someone >contacted my wife and she was replying. Some systems will examine the message in depth, and check some or all of the domains found against domain reputation lists. Some of my clients find their mail is rejected because they are using a third-party statistics or image hosting system, and that system's domain has been listed in URIBL or a similar service, for a simple example. mdr -- "There will be more spam." -- Paul Vixie ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
On 7/31/22 11:38 AM, Michael Rathbun via mailop wrote: Since you have included none of the information that might have been used by the receiving system (your IP? Your HELO string? The domain in the envelope? Any domains referenced in the body?) ... Fair point: The sending domain is annbauer.com, mx is hosted by mx.oustrencats.com. IP addresses: root@giraffe:~# host mx.oustrencats.com mx.oustrencats.com has address 50.116.29.164 mx.oustrencats.com has IPv6 address 2600:3c00:e000:323::1 I am not positive on the HELO string, as postfix isn't logging that, but I would guess it is mx.oustrencats.com with envelope from x...@annbauer.com Again, DKIM, SPF, DMARC and reverse DNS are set up properly enough to get mail delivered to google. Not sure what you mean about domains referenced in the body, someone contacted my wife and she was replying. Thanks! John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
Dnia 31.07.2022 o godz. 09:28:31 John Gateley via mailop pisze: > > Usually providers provide info on the block, with details on how to get > removed if you are legit etc. This error is very unfriendly... For example in case of Postfix, if you manually add sender's IP or email address to the block list (check_sender_access or similar), then the sending server gets just "Access denied" message. Actually, in case of a manual block, there's really not much info to return except "Access denied"... -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
On Sun, 31 Jul 2022 08:36:31 -0500, John Gateley via mailop wrote: >I don't see any details in the error message. Since you have included none of the information that might have been used by the receiving system (your IP? Your HELO string? The domain in the envelope? Any domains referenced in the body?) ... >Any ideas? Thanks! ...we really can't say too much. mdr -- "There are no laws here, only agreements." -- Masahiko ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
I just ran through the last month of SMTP logs and the only error I found was "451 System policy engine error" for sympatico.ca besides "User unknown" (contact form typos it looks like). So for what little it's worth, I think this is either domain or IP reputation. Doesn't have to be for anything you did, they may be like AT and just have a bunch of IPs blocked for no real reason. On 2022-07-31 08:36, John Gateley via mailop wrote: Hello, I just got a bounce from sympatico.ca that I don't understand: Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, size=7809, nrcpt=1 (queue active) Jul 31 04:20:41 giraffe postfix/smtp[526159]: 841B53C6CD: to=, relay=mx.sympatico.ca[209.71.212.24]:25, delay=433213, delays=433213/0.02/0.15/0, dsn=4.0.0, status=de ferred (host mx.sympatico.ca[209.71.212.24] refused to talk to me: 554 Access Denied) Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, status=expired, returned to sender It had been in the queue for a week or so, and finally bounced. I don't see any details in the error message. I have a very small mail server (just my wife and I) but it is configured with reverse DNS, SPF, DKIM and DMARC. I can send to the big players without bouncing or ending in the spam folder. Any ideas? Thanks! John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
On 7/31/22 8:55 AM, Suresh Ramasubramanian via mailop wrote: Why is it deferred when you get a 554? Probably a spam block on your IP or domain name with that generic an error I'm not sure why my server defers on 554, that's the default config for postfix I think. Anyways, that is my server, not sympatico.ca Usually providers provide info on the block, with details on how to get removed if you are legit etc. This error is very unfriendly... John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Trouble sending to sympatico.ca
Why is it deferred when you get a 554? Probably a spam block on your IP or domain name with that generic an error --srs From: mailop on behalf of John Gateley via mailop Sent: Sunday, July 31, 2022 7:06:31 PM To: mailop@mailop.org Subject: [mailop] Trouble sending to sympatico.ca Hello, I just got a bounce from sympatico.ca that I don't understand: Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, size=7809, nrcpt=1 (queue active) Jul 31 04:20:41 giraffe postfix/smtp[526159]: 841B53C6CD: to=, relay=mx.sympatico.ca[209.71.212.24]:25, delay=433213, delays=433213/0.02/0.15/0, dsn=4.0.0, status=de ferred (host mx.sympatico.ca[209.71.212.24] refused to talk to me: 554 Access Denied) Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, status=expired, returned to sender It had been in the queue for a week or so, and finally bounced. I don't see any details in the error message. I have a very small mail server (just my wife and I) but it is configured with reverse DNS, SPF, DKIM and DMARC. I can send to the big players without bouncing or ending in the spam folder. Any ideas? Thanks! John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Trouble sending to sympatico.ca
Hello, I just got a bounce from sympatico.ca that I don't understand: Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, size=7809, nrcpt=1 (queue active) Jul 31 04:20:41 giraffe postfix/smtp[526159]: 841B53C6CD: to=, relay=mx.sympatico.ca[209.71.212.24]:25, delay=433213, delays=433213/0.02/0.15/0, dsn=4.0.0, status=de ferred (host mx.sympatico.ca[209.71.212.24] refused to talk to me: 554 Access Denied) Jul 31 04:20:41 giraffe postfix/qmgr[2366]: 841B53C6CD: from=, status=expired, returned to sender It had been in the queue for a week or so, and finally bounced. I don't see any details in the error message. I have a very small mail server (just my wife and I) but it is configured with reverse DNS, SPF, DKIM and DMARC. I can send to the big players without bouncing or ending in the spam folder. Any ideas? Thanks! John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
