Why are my emails soft bouncing with Bigpond after implementing DMARC changes?

Email marketer from Gmass explains that a sender's reputation can significantly impact email deliverability. After DMARC implementation, receivers might more strictly enforce reputation-based filtering, leading to soft bounces if your sending domain or IP has a poor or unknown reputation.

Email marketer from EmailOctopus shares that soft bounces can occur due to temporary server issues, full mailboxes, or content-related spam filtering at the recipient's end, even if DMARC is correctly set up. These problems can be exacerbated after DMARC implementation if sending practices are not optimal.

Email marketer from Reddit suggests that while DMARC implementation can cause deliverability issues, the specific error message indicates a content filtering issue by Bigpond. They recommend reviewing email content for spam triggers.

Email marketer from StackOverflow suggests the error message '558 5.7.1 Message content rejected due to suspected spam' usually indicates that the content of your email is being flagged by Bigpond's spam filters, not necessarily a DMARC issue. Check your content and IP reputation.

Email marketer from Mailjet suggests that even with proper DMARC setup, soft bounces can occur if the email content triggers spam filters. They recommend analyzing email content for common spam keywords, broken links, and excessive use of images. Try different content and A/B test.

Email marketer from SendGrid suggests that DMARC builds upon SPF and DKIM. If SPF or DKIM are not configured correctly or are failing alignment checks, implementing DMARC with a strict policy can cause emails to be soft bounced. Verify both SPF and DKIM are properly set up for your domain.

Marketer from Email Geeks suggests the soft bounce issues with Bigpond may not be related to DMARC but rather due to the message content being flagged as spam.

Email marketer from Litmus shares that incorrect alignment between SPF and DKIM records after implementing DMARC can lead to deliverability problems. DMARC relies on these authentication methods, so any misconfiguration can cause emails to soft bounce or be rejected.

Email marketer from Email on Acid shares that soft bounces can happen if the sending IP address has a poor reputation or is blacklisted. Implementing DMARC can sometimes reveal underlying reputation issues that were previously masked. Check your IP reputation with senderbase.

Expert from Word to the Wise suggests that DMARC enforcement can reveal underlying sender reputation problems. Even if the email passes authentication, a poor sender reputation can still lead to soft bounces, especially with stricter filtering policies. Focus on improving sender reputation by reducing spam complaints and maintaining consistent sending volumes.

Expert from Word to the Wise explains that when implementing DMARC, messages that fail DMARC checks may be rejected or quarantined based on the DMARC policy (p=reject or p=quarantine). If your SPF and DKIM aren't correctly aligned with DMARC, legitimate messages may start bouncing. Review your DMARC reports to diagnose the alignment issues after implementing DMARC.

Expert from Spamresource.com explains that changes to DMARC can highlight existing issues. If messages contain problematic content, or poor quality HTML, this will trigger spam filters, resulting in soft bounces. Review your content and reduce spam 'trigger' words.

Documentation from Microsoft explains that a 550 5.7.1 error, similar to the one reported, can indicate a variety of issues including spam filtering, policy violations, or sender reputation problems. Investigate if your domain or IP are on any blacklists after DMARC was implemented.

Documentation from Google Workspace highlights that ISPs like Bigpond often follow similar bulk sender guidelines. These guidelines include maintaining a low spam complaint rate, authenticating emails with SPF and DKIM, and providing easy unsubscribe options. Failing to meet these guidelines can lead to soft bounces.

Documentation from RFC 5321 defines SMTP error codes, including 558. It explains that a 5xx error generally indicates a permanent failure, while a 4xx error indicates a temporary failure. A 5.7.1 error usually means the message was rejected due to content or policy reasons, which could relate to spam filtering after DMARC enforcement.

Documentation from ACMA explains that Australian ISPs like Bigpond implement strict spam filtering mechanisms. The content of the email, sender reputation, and compliance with Australian spam laws play a significant role in whether an email is accepted or soft bounced. Ensure your email complies with regulations.

Documentation from DMARC.org explains that incorrect DMARC configuration (e.g., a strict 'reject' policy without proper SPF/DKIM alignment) can lead to legitimate emails being blocked or soft bounced by receiving servers like Bigpond. Check your DMARC record is correct and aligned.