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We have four dedicated IPs with them and have found there are a variety of providers (such as Comcast and, oddly, a lot of French ISPs) who use systems (such as
by petercooper 5y ago
We have four dedicated IPs with them and have found there are a variety of providers (such as Comcast and, oddly, a lot of French ISPs) who use systems (such as Mimecast or Symantec) which basically mark down the entirety of Sendgrid's IP address space. So we now have Postmark as a "fall back" for failed deliveries which is working quite well.
- fogihujy 5y agoYeah, there's been a lot of talk about mail admins simply dropping all packets from Sendgrid's range. At least one of my customers assign a higher spam score to mails simply because they're from Sendgrid.