Top Deliverability’s Blog
Spam Resource: Tucows / OpenSRS Infrastructure Changes
Al Iverson just issued a new brilliant story on Spam Resource:
Per notification on the Mailop mailing list on November 24, 2021, “Tucows / OpenSRS is executing an upgrade that will result in new SMTP outbound IP addresses being used within the next couple weeks.All outbound email for regular and “filter-only” delivery:184.108.40.206/24220.127.116.11/2418.104.22.168/24All outbound forward and autoresponder traffic:22.214.171.124/32 forward.b.hostedemail.com126.96.36.199/32 fo-relay.a.hostedemail.com188.8.131.52/32 forward.a.hostedemail.com”My understanding is that these changes will apply to any domains with MX records pointing at *.hostedemail.com infrastructure. These are email customers of Tucows/OpenSRS as covered here.
More here: Tucows / OpenSRS Infrastructure Changes
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
All SpamAssassin rules in one place, EXPLAINED!
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Check the DNS records of your domain with our free DNS tool.
The most comprehensive Email Deliverability and Marketing Glossary!