Re: [AFMUG] SMTP Spam troubles
+1 I emailed mailop list about a similar issue and a Microsoft admin emailed me privately about it. My listing in their system was caused by a hacked account that was resolved in a few hours, but they continued treating us as a spam source for several days after. The MSFT guy eventually told me that there was an internal issue that prevented my auto delisting and they fixed it. Also, as a mitigation step I sent outgoing through a different IP address for awhile. I keep a /26 in my SPF record so I just picked another one from that block. I don't know if you have that luxury. On 12/8/2020 10:50 AM, Mike Hammett wrote: MailOps would be better suited than NANOG. - Mike Hammett Intelligent Computing Solutions <http://www.ics-il.com/> <https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL> Midwest Internet Exchange <http://www.midwest-ix.com/> <https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix> The Brothers WISP <http://www.thebrotherswisp.com/> <https://www.facebook.com/thebrotherswisp> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> *From: *"Steve Jones" *To: *"AnimalFarm Microwave Users Group" *Sent: *Tuesday, December 8, 2020 8:57:31 AM *Subject: *Re: [AFMUG] SMTP Spam troubles I think the microsoft outage recently forced them to tickle their middle bits. They rate limited RackSpace even the other day. This is yet another of the billion reasons why Im glad we dont host our own email The NANOG list will probably get you contacts for resolutions On Tue, Dec 8, 2020 at 8:51 AM Nate Burke <mailto:n...@blastcomm.com>> wrote: I've started having a lot of problems over the last week with my mailserver getting blocked for Spam. I can't find any reason why, but Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists that I can find, MXToolbox shows it clean on all their blacklist checks, and it's not on barracuda's list. My Mailserver traffic is normal, so I don't' think I have any compromised accounts. I can't find anywhere to check/remove the Microsoft blacklist. The Returned SMTP Messages just has a Link to their general FAQ page and a helpful note that says 'We are blocking your email, Contact your network administrator for assistance'. Going directly to Senderbase and looking up My server shows the server clean. I've already told one customer to move their domain off of me, so I don't have to answer their hourly calls wondering when it will be fixed, and I'm getting ready to tell another to leave, since there's nothing that I can find to fix. But it's always MY fault that someone else is not accepting their email. It's never up to the person with the Hotmail or Comcast account complaining to their company that they can't receive mail from this person. Did something recently change with some SMTP Protocol or vague DNS check that I missed updating that the big companies are blacklisting me now? -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] SMTP Spam troubles
Microsoft and Comcast are a strange combination without some common thread. I’m assuming it’s your mailserver IP and not the customer’s domain being blocked, also that it’s outlook.com or Hotmail.com blocking you, not Microsoft’s paid filtering service I forget what it’s called. One thing we’ve tried to enforce for a long time is not to allow customers to autofoward their mail. You may get blamed for forwarded spam, plus forwarding may bypass your spam filters. This is hard to enforce if your mailserver offers self-service autoforwarding. I remember we had a realty agency where almost every agent had their email forwarded to their personal email address at Gmail, Yahoo, etc. From: AF On Behalf Of Mike Hammett Sent: Tuesday, December 8, 2020 9:50 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] SMTP Spam troubles Microsoft has SNDS. Microsoft and Google are the two hardest I've found to get removal from. - Mike Hammett <http://www.ics-il.com/> Intelligent Computing Solutions <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> <http://www.midwest-ix.com/> Midwest Internet Exchange <https://www.facebook.com/mdwestix> <https://www.linkedin.com/company/midwest-internet-exchange> <https://twitter.com/mdwestix> <http://www.thebrotherswisp.com/> The Brothers WISP <https://www.facebook.com/thebrotherswisp> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> _ From: "Nate Burke" mailto:n...@blastcomm.com> > To: "Animal Farm" mailto:af@af.afmug.com> > Sent: Tuesday, December 8, 2020 8:50:16 AM Subject: [AFMUG] SMTP Spam troubles I've started having a lot of problems over the last week with my mailserver getting blocked for Spam. I can't find any reason why, but Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists that I can find, MXToolbox shows it clean on all their blacklist checks, and it's not on barracuda's list. My Mailserver traffic is normal, so I don't' think I have any compromised accounts. I can't find anywhere to check/remove the Microsoft blacklist. The Returned SMTP Messages just has a Link to their general FAQ page and a helpful note that says 'We are blocking your email, Contact your network administrator for assistance'. Going directly to Senderbase and looking up My server shows the server clean. I've already told one customer to move their domain off of me, so I don't have to answer their hourly calls wondering when it will be fixed, and I'm getting ready to tell another to leave, since there's nothing that I can find to fix. But it's always MY fault that someone else is not accepting their email. It's never up to the person with the Hotmail or Comcast account complaining to their company that they can't receive mail from this person. Did something recently change with some SMTP Protocol or vague DNS check that I missed updating that the big companies are blacklisting me now? -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] SMTP Spam troubles
geek On Tue, Dec 8, 2020 at 9:51 AM Mike Hammett wrote: > MailOps would be better suited than NANOG. > > > > - > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > -- > *From: *"Steve Jones" > *To: *"AnimalFarm Microwave Users Group" > *Sent: *Tuesday, December 8, 2020 8:57:31 AM > *Subject: *Re: [AFMUG] SMTP Spam troubles > > I think the microsoft outage recently forced them to tickle their middle > bits. They rate limited RackSpace even the other day. This is yet another > of the billion reasons why Im glad we dont host our own email > > The NANOG list will probably get you contacts for resolutions > > On Tue, Dec 8, 2020 at 8:51 AM Nate Burke wrote: > >> I've started having a lot of problems over the last week with my >> mailserver getting blocked for Spam. I can't find any reason why, but >> Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists >> that I can find, MXToolbox shows it clean on all their blacklist checks, >> and it's not on barracuda's list. My Mailserver traffic is normal, so I >> don't' think I have any compromised accounts. >> >> I can't find anywhere to check/remove the Microsoft blacklist. The >> Returned SMTP Messages just has a Link to their general FAQ page and a >> helpful note that says 'We are blocking your email, Contact your network >> administrator for assistance'. >> >> Going directly to Senderbase and looking up My server shows the server >> clean. >> >> I've already told one customer to move their domain off of me, so I >> don't have to answer their hourly calls wondering when it will be fixed, >> and I'm getting ready to tell another to leave, since there's nothing >> that I can find to fix. But it's always MY fault that someone else is >> not accepting their email. It's never up to the person with the Hotmail >> or Comcast account complaining to their company that they can't receive >> mail from this person. >> >> Did something recently change with some SMTP Protocol or vague DNS check >> that I missed updating that the big companies are blacklisting me now? >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] SMTP Spam troubles
MailOps would be better suited than NANOG. - Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP - Original Message - From: "Steve Jones" To: "AnimalFarm Microwave Users Group" Sent: Tuesday, December 8, 2020 8:57:31 AM Subject: Re: [AFMUG] SMTP Spam troubles I think the microsoft outage recently forced them to tickle their middle bits. They rate limited RackSpace even the other day. This is yet another of the billion reasons why Im glad we dont host our own email The NANOG list will probably get you contacts for resolutions On Tue, Dec 8, 2020 at 8:51 AM Nate Burke < n...@blastcomm.com > wrote: I've started having a lot of problems over the last week with my mailserver getting blocked for Spam. I can't find any reason why, but Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists that I can find, MXToolbox shows it clean on all their blacklist checks, and it's not on barracuda's list. My Mailserver traffic is normal, so I don't' think I have any compromised accounts. I can't find anywhere to check/remove the Microsoft blacklist. The Returned SMTP Messages just has a Link to their general FAQ page and a helpful note that says 'We are blocking your email, Contact your network administrator for assistance'. Going directly to Senderbase and looking up My server shows the server clean. I've already told one customer to move their domain off of me, so I don't have to answer their hourly calls wondering when it will be fixed, and I'm getting ready to tell another to leave, since there's nothing that I can find to fix. But it's always MY fault that someone else is not accepting their email. It's never up to the person with the Hotmail or Comcast account complaining to their company that they can't receive mail from this person. Did something recently change with some SMTP Protocol or vague DNS check that I missed updating that the big companies are blacklisting me now? -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] SMTP Spam troubles
Microsoft has SNDS. Microsoft and Google are the two hardest I've found to get removal from. - Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP - Original Message - From: "Nate Burke" To: "Animal Farm" Sent: Tuesday, December 8, 2020 8:50:16 AM Subject: [AFMUG] SMTP Spam troubles I've started having a lot of problems over the last week with my mailserver getting blocked for Spam. I can't find any reason why, but Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists that I can find, MXToolbox shows it clean on all their blacklist checks, and it's not on barracuda's list. My Mailserver traffic is normal, so I don't' think I have any compromised accounts. I can't find anywhere to check/remove the Microsoft blacklist. The Returned SMTP Messages just has a Link to their general FAQ page and a helpful note that says 'We are blocking your email, Contact your network administrator for assistance'. Going directly to Senderbase and looking up My server shows the server clean. I've already told one customer to move their domain off of me, so I don't have to answer their hourly calls wondering when it will be fixed, and I'm getting ready to tell another to leave, since there's nothing that I can find to fix. But it's always MY fault that someone else is not accepting their email. It's never up to the person with the Hotmail or Comcast account complaining to their company that they can't receive mail from this person. Did something recently change with some SMTP Protocol or vague DNS check that I missed updating that the big companies are blacklisting me now? -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] SMTP Spam troubles
I think the microsoft outage recently forced them to tickle their middle bits. They rate limited RackSpace even the other day. This is yet another of the billion reasons why Im glad we dont host our own email The NANOG list will probably get you contacts for resolutions On Tue, Dec 8, 2020 at 8:51 AM Nate Burke wrote: > I've started having a lot of problems over the last week with my > mailserver getting blocked for Spam. I can't find any reason why, but > Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists > that I can find, MXToolbox shows it clean on all their blacklist checks, > and it's not on barracuda's list. My Mailserver traffic is normal, so I > don't' think I have any compromised accounts. > > I can't find anywhere to check/remove the Microsoft blacklist. The > Returned SMTP Messages just has a Link to their general FAQ page and a > helpful note that says 'We are blocking your email, Contact your network > administrator for assistance'. > > Going directly to Senderbase and looking up My server shows the server > clean. > > I've already told one customer to move their domain off of me, so I > don't have to answer their hourly calls wondering when it will be fixed, > and I'm getting ready to tell another to leave, since there's nothing > that I can find to fix. But it's always MY fault that someone else is > not accepting their email. It's never up to the person with the Hotmail > or Comcast account complaining to their company that they can't receive > mail from this person. > > Did something recently change with some SMTP Protocol or vague DNS check > that I missed updating that the big companies are blacklisting me now? > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
[AFMUG] SMTP Spam troubles
I've started having a lot of problems over the last week with my mailserver getting blocked for Spam. I can't find any reason why, but Microsoft/Senderbase/Comcast are blocking me. I'm not on any Blacklists that I can find, MXToolbox shows it clean on all their blacklist checks, and it's not on barracuda's list. My Mailserver traffic is normal, so I don't' think I have any compromised accounts. I can't find anywhere to check/remove the Microsoft blacklist. The Returned SMTP Messages just has a Link to their general FAQ page and a helpful note that says 'We are blocking your email, Contact your network administrator for assistance'. Going directly to Senderbase and looking up My server shows the server clean. I've already told one customer to move their domain off of me, so I don't have to answer their hourly calls wondering when it will be fixed, and I'm getting ready to tell another to leave, since there's nothing that I can find to fix. But it's always MY fault that someone else is not accepting their email. It's never up to the person with the Hotmail or Comcast account complaining to their company that they can't receive mail from this person. Did something recently change with some SMTP Protocol or vague DNS check that I missed updating that the big companies are blacklisting me now? -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
