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Site check
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irs.gov
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irs.gov
MX records & mail servers for irs.gov
Email security & deliverability · grade A
MX
10 emgc.irs.gov
10 emge.irs.gov
20 emgw.irs.gov
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80
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94
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90
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84
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84
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84
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82
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87
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93
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89