Sh4mefulIP Address: 103.107.161.241
IP address 103.107.161.241 is registered to SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100 and geolocates to Khulna, Bangladesh. It was observed in sh4meful's dataset on June 28, 2026. Over the observation window, it has failed DMARC alignment once, targeting one sender domain. It has no reverse DNS record. Network context: this address sits within SaltSync-bd (SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100), a network sh4meful has observed producing 1 failures across 1 distinct IP during the same window.
Failure Activity Over Time
Peak activity was observed in the week of June 22, 2026 with 4 failures recorded. Activity in the most recent 30-day window increased sharply compared with the prior period (4 vs 0 failures).
This IP has claimed to send from 1 sender domain monitored by sh4meful. The single targeted domain suggests either a compromised sending source or a spoofing attempt focused on a specific brand.
This page shows DMARC authentication failure data for this IP address. Learn more about this data.
Geolocation Information
- Country:
- BD Bangladesh
- Region:
- Khulna Division
- City:
- Khulna
- Coordinates:
- 22.8159, 89.566
WHOIS Information
- Network Name:
- SaltSync-bd
- CIDR:
103.107.161.0/24- Owner:
- SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100
Analysis
This IP generated 4 messages that triggered DMARC failures on June 28, 2026, all within a single day. Every message observed from this source failed both SPF and DKIM verification. Receiving mail providers applied a reject disposition, refusing delivery outright.
The address has no reverse DNS record. Legitimate mail infrastructure almost always publishes a PTR record, because major receivers (Gmail, Microsoft 365, Yahoo) penalize or reject mail without one, and because it is a baseline operational hygiene expectation. Its absence, combined with authentication failure, is consistent with a host being used to originate spoofed mail rather than one misconfigured by a legitimate operator.
Geolocation places the host in Khulna, Bangladesh, on infrastructure operated by SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100. Abuse-reporting channels exist in this jurisdiction but historical response rates are inconsistent, meaning remediation is more often handled through receiver-side blocking than provider-side takedown.
The address is registered to SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100 (SaltSync-bd). Enterprise-registered addresses that appear in DMARC failure data are typically either compromised hosts on the organization's network or outbound mail relays that are not properly authorized in the domain's SPF record.
Across the wider SaltSync-bd network, 1 distinct IP has been associated with 1 authentication failures over 4 observed messages, spanning 1 country. Activity on this network is sparse in this dataset, suggesting isolated rather than systematic abuse.
If your domain appears in the From header of mail from this address, treat it as probable spoofing. Verify that your SPF record does not authorize this host, directly or through nested include mechanisms, and that no DKIM selector you publish has been issued to it. If both checks come back clean, the receiver's reject action is doing its job.
Your DMARC policy posture matters more than any IP-level response here. The enforcement action applied to this mail indicates your policy is already providing protection. Maintaining p=reject across all your domains closes the gap for attackers who manage partial alignment. Domains that remain at p=none long-term tend to be impersonated repeatedly, because the cost to the attacker of attempting is effectively zero.
Blocking this individual address has limited durability: an attacker can rotate to another address in the same /24 subnet at effectively zero cost. More durable responses include monitoring aggregate DMARC reports so new sources are visible as they emerge, tightening SPF to remove overly permissive include chains or +all mechanisms, and ensuring DKIM is signing every legitimate outbound stream so alignment failures are unambiguous. The formal abuse contact for SaltSync Internet 7 K.D.A Avenue,Munna Tower,Khulna-9100 is listed in APNIC WHOIS records, though response rates from this jurisdiction are inconsistent.
External Reputation Lookups
Look up this IP in external threat intelligence and reputation databases (opens in new tab):
Recommended Action
If this IP appears in your own DMARC reports, treat it as an unauthorized sender unless you have specifically verified it as a legitimate service you use. Ensure your DMARC policy is at p=quarantine or p=reject to prevent delivery of messages this IP claims to send from your domain. If you're new to DMARC, our complete guide walks through the mechanics.